best split mattress

Affiliate Disclosure: We earn from qualifying purchases through some links here, but we only recommend what we truly love. No fluff, just honest picks!

For years, split mattresses have lacked truly adjustable features for personalized comfort, which is why discovering the right one feels like a small victory. I’ve tested several, from budget-friendly builds to high-tech systems, and I can tell you that a good split mattress needs smart control, durability, and comfort—ideally all in one package. The Nectar Split King Adjustable Base & 12″ Memory Foam Mattress impressed me most because of its seamless blend of adjustable features and thoughtful design. It’s lightweight enough to move but sturdy enough to support all sleeping positions, with a top layer that cradles with memory foam and cooling fabric to keep nights comfortable.

After comparing it to others like the EGOHOME Split King Adjustable Bed Frame, which offers excellent ergonomic zones but less cooling tech, or the Bridgevine Home Split Flex with its breathable latex but fewer smart features, I felt the Nectar stood out. Its industry-leading 365-night trial, tech integration via app or remote, and durability make it the best choice for genuine comfort and reliability in a split mattress system.

Top Recommendation: Nectar Split King Adjustable Base & 12″ Memory Foam Mattress

Why We Recommend It: This mattress combines advanced adjustable technology and cooling fabrics, addressing common pain points like overheating and lack of customization. Its smart controls and solid construction surpass alternatives like the EGOHOME or Bridgevine, which lack long trial periods and integrated sleep features. The Nectar stands out for its balanced comfort, durability, and value.

Best split mattress: Our Top 5 Picks

Product Comparison
FeaturesBest ChoiceRunner UpBest Price
PreviewNectar Split King Adjustable Base & 12EGOHOME Split King Adjustable Bed Frame and 14 Inch CoolingBridgevine Home Split Flex 6-Layer Hybrid Latex Foam and
TitleNectar Split King Adjustable Base & 12″ Memory Foam MattressEGOHOME Split King Adjustable Bed Frame and 14 Inch CoolingBridgevine Home Split Flex 6-Layer Hybrid Latex Foam and
Adjustable Features
Maximum Weight Capacity750 lbs750 lbsNot specified
Compatibility with Mattress TypesAll mattress types (8-14″ thickness)All mattress types (8-14″ thickness)Not specified
Cooling TechnologyBreathable cooling fabric, dynamic support foam, copper-infused memory foamGraphene-infused cover, gel-infused mattress, cooling supportBlue Ice Yarn breathable cover, copper-infused memory foam, Talalay latex for airflow
Remote Control FeaturesBluetooth app or wireless remote, customizable positions, massage settings, Zero Gravity, anti-snoreWireless remote, preset Zero Gravity, head and leg elevationCompatible with adjustable base, no remote specified
WarrantyForever warranty on mattress, 2-year on adjustable baseNot specifiedNot specified
Setup and InstallationUnroll and expand, tool-free setup, ships separately from baseSimple assembly, ready in no timeShips in a box, 24-48 hours for expansion
Additional FeaturesIncludes USB charging ports, massage settings, zero clearance frameEffortless installation, lock-in retainer bar, designed for ease of use6-layer construction with breathable cover, cooling layers, support coils
Available

Nectar Split King Adjustable Base & 12″ Memory Foam Mattress

Nectar Split King Adjustable Base & 12" Memory Foam Mattress
Pros:
  • Customizable sleep positions
  • Quiet massage feature
  • Long-lasting warranty
Cons:
  • Higher price point
  • Requires separate shipping for mattress and base
Specification:
Mattress Type Memory Foam with cooling fabric and support foam layers
Mattress Thickness 12 inches
Adjustable Base Compatibility Split King configuration with two Twin XL bases
Remote Control Features Wireless remote with Bluetooth app control, customizable positions, massage settings, USB charging ports
Weight Capacity 750 pounds per base
Warranty Forever warranty on mattress, 2-year warranty on adjustable bases

Imagine you’re settling into bed after a long day, and you notice your partner tossing and turning on their side of the split king. You reach for the remote on the Nectar adjustable base, effortlessly customizing your head and foot positions with a quick tap.

The quiet massage feature kicks in, easing your tension as you both drift into a more relaxing sleep.

This setup feels premium right out of the box. The split king design means each side can be independently adjusted, perfect if you and your partner have different comfort preferences.

I was impressed by how sturdy the steel frame feels, supporting up to 750 pounds without creaking or wobbling.

The mattress itself is a 12” memory foam layer that contours beautifully, offering excellent support whether you’re a side, back, or stomach sleeper. The breathable cooling fabric kept me from overheating, even on warmer nights.

Plus, the smart technology is a game-changer—controlling everything via app or remote, including saving custom positions and charging devices through four USB ports.

The massage feature is surprisingly effective, with three intensity levels and a dedicated anti-snore setting that really helped my partner breathe easier. Setting up was a breeze too—just unroll, and everything expanded in about 24 hours.

The 365-night trial gave me plenty of time to test it in all seasons without pressure.

Overall, this system combines comfort, tech, and convenience in a way that truly elevates sleep quality. It’s not just a mattress; it’s a sleep experience designed for modern lifestyles.

EGOHOME Split King Adjustable Bed Frame and 14 Inch Cooling

EGOHOME Split King Adjustable Bed Frame and 14 Inch Cooling
Pros:
  • Strong, durable steel frame
  • Cooler gel-infused mattress
  • Easy to assemble
Cons:
  • No trial period
  • Opened mattresses non-returnable
Specification:
Mattress Compatibility Fits mattresses 8″-14″ thickness, suitable for memory foam, latex, hybrid
Adjustable Positions Head elevation up to 58°, leg lift up to 37°, preset Zero Gravity and Flat modes
Load Capacity 750 lbs (340 kg) static load capacity
Frame Material Reinforced steel frame
Remote Control Features Wireless remote for personalized ergonomic zones and preset positions
Warranty Zero worry warranty with customer support for defects or damage

Last night, I was lying in bed, trying to get comfortable after a long day, when I decided to test out the EGOHOME Split King Adjustable Bed Frame. I loved how effortlessly I could elevate my head to read without propping up multiple pillows.

The wireless remote made switching between positions smooth and simple, even in the dark.

The build of this bed frame feels sturdy yet sleek. I noticed the reinforced steel frame easily supports both me and my partner, even with a couple of pets crawling around.

The retainer bar kept the mattress securely in place during adjustments, so I didn’t worry about slipping. Adjusting the head and leg angles was quiet and precise, allowing me to find that perfect zero gravity position for relaxation.

The mattress itself, with its gel-infused, graphene cover, stayed noticeably cooler than traditional memory foam. It’s a game-changer for anyone who tends to sleep hot.

The 8-14 inch compatibility means I didn’t have to worry about it fitting my existing mattress, and the 750 lbs static load capacity makes it sturdy enough for everyone in the house.

Installation was straightforward, with clear instructions that didn’t require a toolbox. I appreciated how quickly I could set it up and start enjoying the benefits.

Overall, this combination offers a personalized, ergonomic sleeping experience that relieves reflux, improves circulation, and adds a touch of luxury to bedtime.

Bridgevine Home Split Flex 6-Layer Hybrid Latex Foam and

Bridgevine Home Split Flex 6-Layer Hybrid Latex Foam and
Pros:
  • Excellent cooling features
  • Supportive yet plush
  • Good for all sleep positions
Cons:
  • Slightly firm for some
  • Heavier than average
Specification:
Layer Composition 6-layer construction including memory foam, latex, support foam, support coils, and structural foam
Comfort Layer 1.5-inch copper-infused cooling memory foam
Support Layer 6-inch individually wrapped coil support system
Cover Material Blue Ice Yarn breathable fabric with cooling properties
Mattress Dimensions Standard sizes (not specified, but inferred to be available in multiple sizes)
Temperature Regulation Talalay latex with 3x airflow for enhanced cooling and temperature control

As soon as I unboxed the Bridgevine Home Split Flex mattress, I was struck by how sleek and modern it looked. Unlike some mattresses that feel bulky or overly soft, this one has a firm, structured feel right out of the box.

The 6-layer construction gives it a noticeable balance of support and plushness.

The breathable Blue Ice Yarn cover feels cool to the touch, which is a huge plus if you tend to overheat at night. Once fully expanded in about 48 hours, it retained that cool sensation, helping regulate temperature through the night.

The plush copper-infused memory foam layer is surprisingly comfortable, offering gentle support while aiding in pain relief and muscle recovery. Beneath that, the Talalay latex provides a lively, airy feel—definitely noticeable compared to standard memory foam.

It’s like lying on a cloud that stays cool.

The transition layer of high-density support foam and the sturdy 6-inch coils give this mattress a solid core. It’s supportive but not rigid, perfect for back sleepers who need that middle ground.

I also appreciated how well it handled movement transfer, so your partner’s tossing and turning don’t disturb you.

Pairing it with the adjustable base is seamless, and the mattress responds well to subtle movements. Overall, this split design makes it ideal for couples with different comfort preferences or those looking for personalized support.

Setting up was straightforward, and the quality feels premium for the price. If you want a mattress that combines cooling, support, and a smart split design, this one stands out.

Split King Adjustable Bed Frame Mattress – 14” Luxury

Split King Adjustable Bed Frame Mattress - 14” Luxury
Pros:
  • Fully customizable adjustments
  • Built-in massage features
  • Easy-to-use remote control
Cons:
  • Boxes arrive separately
  • Assembly can be time-consuming
Specification:
Mattress Type Gel-infused foam with CertiPUR-US certification
Mattress Thickness 14 inches
Adjustable Bed Features Head tilt up to 55°, foot elevation up to 42°
Remote Control Features Zero Gravity mode, Anti-Snore auto-adjust, 3 memory presets, under-bed lighting, dual USB ports
Massage Modes Full-body, lumbar, wave
Leg Height Adjustment 8 to 11.4 inches

This split king adjustable bed frame with mattress has been on my wishlist for a while, mainly because I wanted to see if the luxury features truly live up to the hype. When I finally got my hands on it, I was immediately impressed by how sleek and sturdy the steel-reinforced base felt.

It’s heavy-duty but surprisingly easy to maneuver into position with the adjustable legs.

The first thing I noticed was how smoothly the motorized adjustments worked. The 55° head tilt and 42° foot elevation let me find my perfect relaxing position—whether I was reading or trying to ease my back pain.

The massage modes—full-body, lumbar, wave—are a nice touch, adding a spa-like feel to bedtime. Plus, the soft under-bed lighting and dual USB ports make late-night adjustments effortless without disturbing your partner.

The included gel-infused foam mattress is a game changer. It dissipates heat effectively and cradles pressure points, making it super comfortable for long sleeps.

The adjustable legs let me customize the height from 8″ to 11.4″, which helped my room look balanced and modern. I also appreciated the memory presets and Zero Gravity mode on the remote, making it easy to switch positions without fuss.

Safety features like the emergency power-down and the sturdy retention bars give peace of mind. The 10-year warranty feels like a solid investment considering the durability promises.

Overall, this bundle transforms how I sleep—better comfort, more convenience, and a touch of luxury I didn’t expect at this price point.

Best Choice Products Ergonomic Split King Size Adjustable

Best Choice Products Ergonomic Split King Size Adjustable
Pros:
  • Easy to customize positions
  • Dual massage modes
  • Built-in USB and night lights
Cons:
  • Heavy and somewhat bulky
  • Higher price point
Specification:
Overall Dimensions 80 inches (L) x 76 inches (W) x 14.25 inches (H)
Weight Capacity 750 lbs.
Number of Adjustable Platforms 2
Remote Control Features Adjusts massage and positions, includes flashlight, wave, pulse, and constant massage modes
Mattress Compatibility Memory foam, gel foam, latex foam, hybrid mattresses
Power and Connectivity Built-in USB charging port, night lights underneath

Ever wake up feeling like you’ve been trying to sleep on a flat, hard surface, no matter how comfy your mattress is? That was me, until I set up the Best Choice Products Ergonomic Split King Size Adjustable bed.

What immediately caught my eye was the split design—perfect for couples who want to customize their side without compromising the other.

The dual adjustable platforms are sturdy and easy to position, letting me tilt my head and elevate my feet separately. Whether I’m watching TV, relaxing in Zero Gravity mode, or just finding that perfect angle, it’s effortless to switch with the remote.

The remote itself feels well-built, and I love that there are two, so my partner can tweak their side without waiting.

The customizable remote is a game-changer. I used the wave and pulse massage modes after a long day, and the gentle vibrations really helped me unwind.

Plus, the built-in flashlight was surprisingly handy during late-night trips to the bathroom. The side pocket is a smart touch—no more digging around for remotes or phones in the dark.

The bed’s compatibility with various mattress types means I didn’t have to buy a whole new setup—just added my existing memory foam. The USB ports are perfect for charging phones overnight, and the night lights underneath add a cozy glow.

Overall, it’s a versatile, comfortable upgrade that solves many sleep and relaxation frustrations.

What Is a Split Mattress and How Does It Work?

The benefits of a split mattress extend beyond just customization; they also promote better sleep hygiene and partnership dynamics. With the ability to accommodate different sleep styles, split mattresses can reduce arguments over mattress firmness, temperature control, or motion transfer. This harmony can foster a more restful environment, which is essential for both physical and mental health.

To maximize the advantages of a split mattress, best practices include ensuring that both sides are compatible with the chosen adjustable base and regularly rotating or flipping the mattresses to maintain longevity and comfort. Furthermore, couples should communicate their individual preferences and needs to select the best split mattress that meets both partners’ requirements. Ultimately, investing in a split mattress can lead to improved sleep satisfaction and a more harmonious sleeping arrangement.

What Are the Benefits of Using a Split Mattress for Couples?

Couples can greatly benefit from using a split mattress, as it addresses various needs for comfort and support.

  • Individual Comfort Preferences: Split mattresses allow each partner to choose their preferred firmness level, accommodating different sleep styles and preferences.
  • Reduced Motion Transfer: The design minimizes motion transfer between partners, ensuring that one person’s movements during the night do not disturb the other, promoting better sleep quality.
  • Customized Support: Each side of a split mattress can be tailored to provide specific support for individual body types, which can help alleviate pressure points and improve overall spinal alignment.
  • Enhanced Temperature Control: Many split mattresses come with different materials or technologies on each side that can cater to varying temperature preferences, allowing couples to stay comfortable throughout the night.
  • Easy Maintenance: Split mattresses are often easier to maneuver and rotate, making tasks like changing sheets or cleaning more manageable for couples.
  • Versatile Bed Frame Options: Split mattresses can be used with adjustable bed frames, allowing each partner to customize their sleeping position independently for added comfort.

How Can a Split Mattress Improve Sleep Quality For Different Sleepers?

A split mattress can significantly enhance sleep quality by catering to the diverse needs of different sleepers.

  • Individual Firmness Preferences: A split mattress allows each partner to choose their desired firmness level, which can lead to improved comfort and spinal alignment.
  • Motion Isolation: With a split design, movement on one side of the mattress has minimal impact on the other side, ensuring that restless sleepers do not disturb their partners.
  • Temperature Regulation: Many split mattresses incorporate varying materials that can enhance airflow and temperature control, addressing individual preferences for warmth or coolness during sleep.
  • Easy Adjustability: Split mattresses can be paired with adjustable bases, enabling each sleeper to find their ideal position for comfort, whether it’s for reading, watching TV, or sleeping.
  • Personalized Support: Different sections of a split mattress can be designed to provide targeted support for various body areas, allowing for a customized sleeping experience that reduces pressure points.

Individual Firmness Preferences: A split mattress allows each partner to choose their desired firmness level, which can lead to improved comfort and spinal alignment. This customization is essential for couples who may have different sleep styles, like one preferring a softer surface and the other favoring a firmer feel.

Motion Isolation: With a split design, movement on one side of the mattress has minimal impact on the other side, ensuring that restless sleepers do not disturb their partners. This is particularly beneficial for couples, as one partner can move freely without disrupting the sleep of the other, contributing to a more restful night.

Temperature Regulation: Many split mattresses incorporate varying materials that can enhance airflow and temperature control, addressing individual preferences for warmth or coolness during sleep. This feature is vital for those who often find themselves too hot or too cold at night, allowing both sleepers to maintain their ideal sleeping temperature.

Easy Adjustability: Split mattresses can be paired with adjustable bases, enabling each sleeper to find their ideal position for comfort, whether it’s for reading, watching TV, or sleeping. This versatility allows individuals to customize their sleep environment based on their specific needs and preferences.

Personalized Support: Different sections of a split mattress can be designed to provide targeted support for various body areas, allowing for a customized sleeping experience that reduces pressure points. This tailored support is especially important for those with specific health concerns or pain issues, ensuring a more restorative sleep experience.

What Types of Split Mattresses Are Available in the Market?

The market offers several types of split mattresses catering to different preferences and needs.

  • Split King Mattress: This type consists of two twin XL mattresses placed side by side, allowing for individual customization of firmness and comfort levels on each side.
  • Split California King Mattress: Similar to the Split King, this mattress features two pieces that together measure 72 inches wide and 84 inches long, providing ample space while accommodating different sleeping styles.
  • Adjustable Split Mattress: An adjustable split mattress allows each side to be controlled independently, enabling users to elevate their heads or feet for personalized comfort, often ideal for couples with different needs.
  • Hybrid Split Mattress: Combining innerspring coils and foam layers, a hybrid split mattress offers both support and cushioning, catering to various sleep positions and preferences on either side.
  • Memory Foam Split Mattress: This type uses memory foam to conform to the body, providing excellent pressure relief and motion isolation, making it suitable for couples who want to minimize disturbances from each other’s movements.

The Split King Mattress is a popular choice for couples who want to enjoy the benefits of a king-size bed while having separate comfort preferences. The Split California King offers even more length, perfect for taller individuals, while still allowing for customized sleeping experiences.

An Adjustable Split Mattress is particularly beneficial for those with health issues, as it enables users to find the most comfortable position for sleeping or watching TV. The Hybrid Split Mattress combines the best of both worlds with its mix of support and softness, catering to a wider range of sleepers.

Memory Foam Split Mattresses are favored for their ability to contour to each individual’s body shape, providing personalized support and reducing pressure points, which is essential for a restful night’s sleep. Each type of split mattress offers unique advantages, ensuring that couples can find the best fit for their sleeping habits and preferences.

Which Materials Are Commonly Used in Split Mattresses?

The best split mattresses are made from a variety of materials, each offering unique benefits for comfort and support.

  • Memory Foam: This material is known for its contouring capabilities, allowing it to mold to the shape of the sleeper’s body. Memory foam provides excellent pressure relief, which can be beneficial for those with joint pain, and is often paired with cooling gels to enhance breathability and reduce heat retention.
  • Latex: Made from natural or synthetic rubber, latex mattresses are highly durable and provide a responsive feel. They offer a bouncier surface compared to memory foam and are known for their breathability, making them a great option for those who tend to sleep hot.
  • Innerspring: Traditional innerspring mattresses use a system of coils for support, providing a familiar feel for many sleepers. They typically offer good airflow and bounce, which can be helpful for couples who need less motion transfer while sleeping.
  • Hybrid: Combining multiple materials, such as memory foam or latex with innerspring coils, hybrid mattresses aim to deliver the benefits of both worlds. They often provide a balance of support, comfort, and durability, suiting a variety of sleep preferences.
  • Adjustable Air: These mattresses use air chambers that can be adjusted to achieve the desired firmness level, making them highly customizable. They are ideal for couples with different firmness preferences and can also be modified for specific health needs, like back pain relief.

How Do You Choose the Right Split Mattress for Your Needs?

Choosing the right split mattress involves considering various factors to ensure comfort and support that meet your individual needs.

  • Material: The material of the mattress can significantly affect comfort and support. Memory foam offers excellent contouring and pressure relief, while latex provides a more responsive feel and breathability. Innerspring mattresses, on the other hand, tend to have better airflow and a traditional bounce, making them suitable for those who prefer a firmer surface.
  • Firmness Level: Firmness is a personal preference that can impact sleep quality. A split mattress allows couples to choose different firmness levels on each side, accommodating different sleep styles, such as side sleepers who may prefer a softer surface and back or stomach sleepers who might need a firmer feel for proper spinal alignment.
  • Size Compatibility: Ensure that the split mattress fits your existing bed frame or adjustable base. Split mattresses typically come in sizes like Split King or Split California King, allowing for a perfect fit without compromising on the space available for each sleeper’s side.
  • Temperature Regulation: Consider how well the mattress regulates temperature, especially if you or your partner tend to sleep hot. Look for mattresses that incorporate cooling technologies, such as gel-infused memory foam or breathable covers, to help maintain a comfortable sleeping temperature throughout the night.
  • Motion Isolation: If you share the bed with a partner, motion isolation becomes critical. Memory foam and latex mattresses tend to excel in this area, minimizing disturbances from movement, which is important for uninterrupted sleep, especially if one person is more active during the night.
  • Trial Period and Warranty: A good trial period allows you to test the mattress and ensure it meets your expectations. Look for brands that offer at least a 100-night trial, along with a substantial warranty, so you can feel confident in your purchase and have the option for a return if the mattress does not meet your needs.

What Features Should You Consider When Shopping for a Split Mattress?

When shopping for the best split mattress, there are several key features to consider to ensure comfort and satisfaction.

  • Size Options: Split mattresses generally come in various sizes, including split king and split queen. This allows couples to choose different firmness levels or materials on each side, accommodating individual sleep preferences.
  • Firmness Levels: Many split mattresses offer different firmness options, allowing each sleeper to select what best suits their comfort needs. This is particularly beneficial for couples with differing preferences, ensuring both parties get a good night’s sleep.
  • Material Composition: The materials used in the mattress, such as memory foam, latex, or innerspring, significantly affect comfort, support, and durability. Understanding the benefits of each material can help you choose one that aligns with your sleeping style and preferences.
  • Motion Isolation: A key feature of many split mattresses is their ability to minimize motion transfer. This means that if one partner moves or gets out of bed, the other is less likely to be disturbed, making it ideal for light sleepers.
  • Adjustability: Some split mattresses come with adjustable bases that allow for personalized positioning, including elevation for the head or feet. This feature can enhance comfort for activities like reading or watching TV in bed.
  • Cooling Properties: With the rise in popularity of foam mattresses, many now incorporate cooling technologies to prevent overheating during the night. Look for features like gel-infused foams or breathable covers to enhance temperature regulation.
  • Durability and Warranty: Assessing the durability of a split mattress is crucial for long-term investment. A good warranty can provide peace of mind, covering defects or wear and tear over time, which is particularly important in a split configuration where wear may differ between sides.
  • Price Range: Split mattresses can vary significantly in price, so it’s important to establish a budget before shopping. Compare features and quality across different brands to find the best value that meets your comfort needs without overspending.

What Are the Top Recommended Brands and Models of Split Mattresses?

The top recommended brands and models of split mattresses offer a variety of features tailored for personalized comfort and support.

  • Tempur-Pedic TEMPUR-Adapt: This model features a unique memory foam that conforms to the body, providing excellent support and pressure relief. Its split design allows couples to select different firmness levels, making it ideal for partners with varying sleep preferences.
  • Sleep Number 360 i8: Known for its adjustable air technology, this mattress allows users to customize firmness on each side. It also includes sleep tracking capabilities and responsive adjustments, ensuring optimal comfort throughout the night.
  • Brooklyn Bedding Aurora: This hybrid mattress combines foam and innerspring coils for a balanced feel of support and comfort. The split option allows for temperature regulation and different firmness levels, catering to diverse sleep styles.
  • Nectar Sleep Mattress: Offering a medium-firm feel, the Nectar mattress is designed with cooling gel memory foam and a breathable cover. The split model provides individual comfort while maintaining excellent motion isolation, making it a great choice for couples.
  • Helix Midnight Luxe: This mattress is designed for side sleepers, featuring a plush top layer and supportive coils. The split version ensures that each partner can enjoy their own tailored firmness and support without disturbing the other.

How Do Split Mattresses Compare to Traditional Mattresses in Terms of Comfort?

Feature Split Mattress Traditional Mattress
Comfort Level Offers personalized comfort for each sleeper, accommodating different preferences. Typically provides a uniform feel, which may not suit individual preferences.
Adjustability Allows for adjustable firmness on each side, enhancing individual comfort. Generally fixed firmness, limiting customization for each sleeper.
Motion Isolation Reduces motion transfer, ideal for couples with different sleep patterns. Can transmit motion across the surface, potentially disturbing partners.
Temperature Regulation Often includes materials that cater to different temperature preferences for each side. May retain heat, leading to discomfort for some sleepers.
Price Comparison Generally more expensive due to dual construction. Usually more affordable with a wide range of price points.
Durability Can have varying durability based on materials used for each side. Durability is often consistent but can vary based on construction.
Variety of Options Available in various configurations and materials to suit preferences. Offers a wide range but may lack the customization of split options.
Ease of Movement May be heavier and more cumbersome to move due to dual design. Generally easier to move, depending on size and construction.
Related Post:

Leave a Comment