Best Luxury Split California King-Size Mattresses


Our review process

We've already done all the heavy lifting researching luxury split california king-size mattresses. That way, you don't have to pour over confusing infographics about choosing the perfect one for you. By reading this guide, you'll have an excellent understanding of what types of mattresses are available on the market, so you can confidently buy a mattress that will ensure comfortable sleep for years to come.

After reviewing luxury split california king-size mattresses, we've gathered the important information to share with you. These split California king mattresses make use of two twin XL size mattresses installed on one base, providing clearly defined personal space between the two sleepers. They measure 72" X 84" and are great for master bedrooms. With a longer build, they are great for taller adults who need extra leg space. They are designed to separately accommodate couples, eliminating motion transfer completely.

Best Overall Score
An image of Sealy Firm Memory Foam Split California King-Size Foam Base 11.5-Inch Mattress

For a better night's rest and ultimate comfort, choose a Sealy Firm Memory Foam Split California King-Size Mattress. This thick mattress is available in a split california king-size, creating a space in between the two, which also makes the bed seem smaller. It features an 11.5-inch thickness, so after long periods of time the mattress won't collapse around the edges. With a firm mattress, it will conform to the natural curves of your spine in order to keep your body properly aligned.

This Sealy mattress features a memory foam construction, accommodating every possible sleeping position. It has a moisture protection cover, extending the performance of your mattress by protecting against spills or water damage. It features a foam base, so all major pressure areas are sufficiently supported. With a design that conforms to your body, it provides improved comfort and support to eliminate pain in sensitive areas of the body. It has cooling technology, which helps hot sleeps stay comfortable throughout the night.

    Pros
    • Firm mattress ensures a deeper and more restful sleep
    • Features a foam base, ensuring all main pressure points are adequately supported
    • Designed to conform to your body for special support and comfort
    Cons
    • Split california king-size will require you to get new sheets, one for each side
    • Firm mattress can put painful pressure on pressure points
    • 11.5-inch thickness can tend to appear bulky in some bed frames
Runner Up
An image of Sealy Plush Hybrid Split California King-Size Response Pro HD Zoned Coil System Foam Base 14-Inch Mattress

For a good night's sleep and endless comfort, choose a Sealy Plush Hybrid Split California King-Size Mattress. With a hybrid construction, this thick mattress combines the best features of various different mattress types. Made to conform to your body, it can help relieve pressure and pain in sensitive areas of the body. It reduces motion transfer, which makes it perfect for restless sleepers since any movement stays isolated.

With a plush comfort level, this Sealy mattress is good for those who love extra softness. It has a 14-inch thickness, which may tend to appear bulky in some bed frames. This thick mattress is available in a split california king-size, adjusting to different sleeping styles. Including a foam base, it adequately supports all main pressure areas of your body. This Sealy mattress features a knitted cover, keeping its shape for easy care.

    Pros
    • Plush mattress is an ideal choice for those looking for a soft surface with additional cushioning
    • Features a foam base, ensuring all major pressure areas are adequately supported
    • Made to conform to your body for unique support and comfort
    Cons
    • Comes in a split california king-size, creating a space between the two sleepers, which also makes the bed seem smaller
    • Plush mattress can become lumpy or sag over time
    • 14-inch thickness can tend to appear bulky in some bed frames
For Side Sleepers
An image of Sealy Firm Memory Foam Split California King-Size Foam Base 12.5-Inch Mattress

If you want to make sure that you don't put too much pressure on your spine while you're sleeping, the Sealy Firm Memory Foam Split California King-Size Mattress might be a great option. With a 12.5-inch thickness, this Sealy mattress will stay in good shape and not sink in even after prolonged use. With a firm comfort level, it will provide support to your body no matter the sleeping position. This Sealy mattress is available in a split california king-size, creating a gap between the two, which also makes the bed seem smaller.

This Sealy mattress features a stretch knit weave, keeping your mattress looking newer for longer. It has a memory foam construction, letting you move around in your sleep and then re-contours to your body after you've settled. It has a foam base, ensuring all main pressure areas are sufficiently supported. With cooling technology, this Sealy mattress regulates body temperature so you never get too hot at night. With a design that conforms to your body, it can help alleviate pain in sensitive parts of the body. This thick mattress is suitable to use for adjustable bed bases.

    Pros
    • Firm mattress will support your joints and other sensitive areas
    • Foam base is designs to give provide superior comfort
    • Conforms to the natural curves of your body for superior pressure point relief
    Cons
    • Comes in a split california king-size, creating a space in between the two, which also makes the bed seem smaller
    • Firm mattress can put painful pressure on pressure points
    • 12.5-inch thickness may tend to appear disproportional in some bed frames
Additional Picks
An image of Sealy Firm Pillow Top Split California King-Size DuraFlex Edge System SealyCushion Foam Mattress

For a combination of comfort and support, choose the Sealy Firm Pillow Top Split California King-Size Mattress and enjoy a good night's sleep. Made with an edge support system, this Sealy mattress gives edge-to-edge comfort and support. It is available in a split california king-size, adjusting to different sleeping preferences. With a firm comfort level, it provides the support necessary for spinal alignment.

This Sealy mattress is designed with a moisture protection cover and has an allergen protection cover, providing a barrier that prevents allergens from collecting in your mattress. It features a pillow top construction, increasing support and relieves back pain. It has a moisture barrier, which helps prevents moisture build-up. This Sealy mattress has a supportive design, aligning your spine horizontally while sleeping on your side. It is designed with SealyCushion foam. It features SealyCool gel memory foam, providing necessary support to your neck and back.

    Pros
    • Firm mattress conforms to the curves of your spine in order to keep your body straight
    • Moisture barrier helps prevents moisture build-up
    • Supportive design ensures proper spinal support and alignment
    Cons
    • Split california king-size means you have to get new fitted sheets, one for each side
    • Firm mattress can put painful pressure on pressure points
    • Pillow top construction is difficult to clean
An image of Natura Organics EcoSoftique Ultra Plush Latex Foam Split California King-Size Mattress

Do you want to sleep in a mattress made free of harsh chemicals? Go for the Natura Organics EcoSoftique Ultra Plush Latex Foam Split California King-Size Mattress. This organic mattress has pressure point relief technology, decreasing pain or stiffness while sleeping. It has a moisture barrier, which eliminates wetness build-up. Featuring an ultra plush comfort level, it is good for people who are looking for extra cushioning, without compromising support and durability. It is available in a split california king-size, creating a gap between the two, which also makes the bed seem smaller. This organic mattress is eco-friendly, so less VOCs and chemicals are emitted into the air. It has a latex foam construction, resisting mold and dust mites naturally. This organic mattress is dust mite resistant, making it a suitable choice for people who suffer from allergies.

    Pros
    • Ultra plush mattress is suitable for all types of sleepers who are looking for the perfect mix of softness and support
    • Equipped with pressure point relief technology to enhance comfort and alleviate pain
    • Moisture barrier reduces wetness build-up
    Cons
    • Comes in a split california king-size, creating a space in between the two sleepers, which also makes the bed seem smaller
    • Ultra plush mattress can get lumpy or sag over time
    • Latex foam construction may feel too "spongy" for some
An image of Natura Sensational Ravishing Split California King-Size Latex ActiveFUSION Climate Control Mattress

For a good night's rest and ultimate comfort, choose a Natura Sensational Ravishing Split California King-Size Mattress. This Natura mattress has a latex core, promoting spinal alignment without ever allowing too much sinking in the mattress. It is available in a split california king-size, creating a space between the two, which also makes the bed feel smaller. It features pressure point relief technology, so your body is supported to diminish any pain. Contouring to your body, it can help ease pressure and pain in sensitive parts of the body. It has increased durability, which allows it to stay in excellent condition for years to come. It features a NaturaWool™ cover, which will regulate humidity within the mattress. It is built with ActiveFUSION climate control foam.

    Pros
    • Features a latex core, promoting spinal alignment without allowing too much sinking in the mattress
    • Designed to contour to your body for improved comfort and support
    • Pressure point relief technology reduces pain or stiffness while sleeping
    Cons
    • Comes in a split california king-size, creating a gap between the two sleepers, which also makes the bed feel smaller
An image of Natura Organics EcoFresh Split California King-Size Mattress

Want to go the eco-friendly route? Consider the Natura Organics EcoFresh Split California King-Size Mattress. This organic mattress has a moisture barrier, which eliminates wetness build-up. With exceptional breathability, it promotes air flow to prevent mold from developing. It is available in a split california king-size, adjusting to individual sleeping styles. This organic mattress is made with eco-friendly fabric, so less VOCs and chemicals are emitted. It has a ventilated design, optimizing the movement of air, so you always feel cool and comfortable while asleep. With a cotton cover, it is easy to wash and won't hold onto odors.

    Pros
    • Comes with a cotton cover, making it great for people with allergies and skin sensitivities
    • Features exceptional breathability, preventing premature wear that would otherwise be caused by moisture and heat
    • Moisture barrier eliminates wetness build-up
    Cons
    • Split california king-size means you have to get new fitted sheets, one for each side
An image of Natura Sensational Jubilance Latex Foam Split California King-Size Latex ActiveFUSION Climate Control Mattress

For both comfort and support, choose the Natura Sensational Jubilance Latex Foam Split California King-Size Mattress and enjoy a restful night's sleep. Providing pressure point relief, this Natura mattress can help to increase your comfort in bed. It contours to the natural curves of your body, increasing its overall comfort and support. This Natura mattress is available in a split california king-size, adjusting to individual sleeping preferences. It has a latex core, promoting spinal alignment without ever allowing too much sinking in the mattress.

This Natura mattress has a latex foam construction, which resists mold and dust mites naturally. It has a NaturaWool™ cover, which will regulate humidity within the mattress. Made with durable materials, this Natura mattress will stay in excellent condition for years to come. This ActiveFUSION climate control Natura mattress monitors your body temperature to keep you warm if you're cold and cool if you're warm.

    Pros
    • Features a latex core, providing excellent air circulation by its open-cell natural structure
    • Contours to your body for increase support and comfort
    • Offers pressure point relief, decreasing pain or stiffness while you're sleeping
    Cons
    • Split california king-size means you have to get new bottom sheets, one for each side
    • Latex foam construction may feel too "spongy" for some
An image of Sealy Firm Memory Foam Split California King-Size Foam Base 10-Inch Mattress

For a combination of comfort and support, choose the Sealy Firm Memory Foam Split California King-Size Mattress and enjoy a restful night's sleep. With a firm comfort level, this thick mattress is great for your lower back because it protects from collapsing. It has a 10-inch thickness, adding greater durability and extending the lifespan of your mattress. It is available in a split california king-size, adjusting to different sleeping preferences.

This Sealy mattress features a knitted cover, which ensures breathability and easy care. It has a memory foam construction, letting you move around in your sleep and then re-contours to your body after you've settled. It has a foam base, ensuring all main pressure areas are sufficiently supported. Made to conform to your body, it can help prevent pressure in sensitive areas of the body. This Sealy mattress has a supportive design, aligning your spine horizontally while sleeping on your side.

    Pros
    • Firm mattress is perfect for people who require precise spinal alignment
    • Features a foam base, ensuring all dominant pressure points are adequately supported
    • Conforms to your body for special comfort and support
    Cons
    • Split california king-size will require you to purchase new sheets, one for each side
    • Firm mattress can put painful pressure on pressure points
    • 10-inch thickness doesn't provide the best support
An image of Natura Sensational Sublime Soft Foam Split California King-Size Mattress

For a good night's sleep and ultimate comfort, opt for a Natura Sensational Sublime Soft Foam Split California King-Size Mattress. With a soft mattress, this Natura mattress is good for people who are looking for a high level of comfort and softness. It is available in a split california king-size, adjusting to individual sleeping preferences. Designed with a foam construction, it will needs very little upkeep and can last for long periods of time. Featuring a cotton cover, this quilt Natura mattress is simple to clean and won't retain odors. It features a NaturaWool™ cover, which helps to control humidity within the mattress. This Natura mattress is fire resistant, which is a safe choice for your bedroom.

    Pros
    • Soft mattress prevents pressure by balancing your body without having your back or joints sink
    • Built with a cotton cover for ultimate coziness and comfort
    • Split california king-size is great for anyone who likes having being able to switch between different types of mattresses
    Cons
    • Comes in a split california king-size, creating a space between the two, which also makes the bed seem smaller
    • Foam construction releases undesirable odors
What Else to Look for When Purchasing Your Next Luxury Split California King-Size Mattress:
Picking Your Mattress Type
Hybrid Mattresses

If you want a hybrid mattress, this split california king-size mattress could be a good choice. These mattresses ensure even weight distribution to prevent sinking, sagging, or drooping. They have various types of coils, which are designed to make you feel like you're floating on your bed and aren't sinking into it. Built with a number of materials, they will provide the right amount of comfort for a good night's rest. Featuring pressure-point relief, they will alleviate any pain in your joints. Moving heat away from your body, these mattresses will allow you to stay cool during a night's rest. One downside is that they are expensive, so if you're shopping on a budget, this might not be the best option for you.

Memory Foam Mattresses

If you're thinking about getting a memory foam mattress, this split california king-size mattress might be a good choice. These mattresses are made of various materials, giving you a wide range of foam densities to choose from. They offer pressure point relief to support sensitive areas, like the shoulders and hips. With superior motion isolation, they will make sure you don't wake your partner when moving. However, they can smell a bit like chemicals at first, so you'll have to air them out for at least 24 hours before putting sheets on. Another downside is that they aren't waterproof, so any interaction with moisture can cause degeneration and reduce their usable life.

Latex Foam Mattresses

If you want a latex foam mattress, this split california king-size mattress could be a good choice for you. These latex foam mattresses provide pressure-point relief by supporting the shoulders and hips. Featuring a breathable design, they circulate air freely, keeping them ventilated and extending their lifespan. They are available in a range of materials, giving you the choice between a variety of foam densities and comfort levels. They are good at dissipating heat to keep you cool all night long and improve your sleep quality. With low VOC emissions, they will not emit odorous gases that have been attributed to causing respiratory irritation unlike many synthetic mattresses which can release chemicals. One downside is that they are expensive, so if you're shopping on a budget, this might not be the best option for you. Additionally, these latex foam mattresses can smell a bit like chemicals initially, so you'll have to air them out for at least 24 hours before adding sheets.

Which Comfort Level Is Best for You?
Firm Mattresses

Looking for a good firm mattress? A split california king-size mattress could be a good choice for you. Firm mattresses are ideal for back sleepers and have an indentation load deflection rating of 34-36 pounds. They promote circulation and blood flow, so you can experience a deeper sleep. These mattresses provide proper weight distribution to support your back and other sensitive areas. A potential downside is that they may be uncomfortable if you're not accustomed to sleeping on firm surfaces, so it'll take a few days to get used to them. In addition, they can put painful tension on specific pressure points, so if you want a mattress that alleviates pain in pressure points, this is not the mattress for you.

Ultra Plush Mattresses

Not sure if you should get an ultra plush mattress? We can help you make your decision by giving you the information that you need. Ultra plush mattresses are ideal for people who usually sleep on their sides and have an indentation load deflection rating of 14-19 pounds. Featuring contouring support, they adjust to your body shape for optimal comfort. They have an additional support, which is ideal for people who suffer from back problems or joint pain. However, they usually become softer over time, so they'll wear down faster than other kinds of mattresses and will need to replaced sooner. In addition, they may be problematic if various sleepers will be using the bed, causing the surface to sink if there is a significant difference in weight. Thinking about getting an ultra plush mattress? Here's one to take a look at.

Plush Mattresses

Are you searching for a plush mattress? A split california king-size mattress might be a good choice for you. Plush mattresses have an extra support, which is ideal for those who have back problems or joint pain. They have a 19-21 pound indentation load deflection rating and are ideal for those who sleep on their back, sides, or stomach. Plush mattresses have contouring support, adjusting to your body's natural curves for optimal comfort. A potential downside is that they may be problematic if various people will be sleeping in the bed, causing the surface to sag if there is a significant weight difference. Additionally, they are more likely to cave in over time, so they will become less supportive and comfortable with extended use.

What Is the Ultimate Mattress Thickness for Your Split California King-Size Mattress?
10-12 Inch Mattresses

There are only two split california king-size mattresses with a thickness of 10-12 inches. Featuring a standard thickness, thick mattresses will conveniently fit in nearly all bed frames. They are less likely to sag, so the surface will remain flat to ensure adequate support. They are suitable to use with standard-size sheets, so it will be easy to find linens that fit properly. They are built with a solid build, so they can hold the weight of two people. However, they can be pretty heavy, so flipping and transporting them will require at least two people. If you think a 10-12 inch mattress is a good choice, here's one to take a look at.

12-14 Inch Mattresses

If you're trying to find a comfortable and supportive split california king-size mattress, you might want to consider getting a 12-14 inch mattress. These 12-14 inch mattresses are suitable to use with standard-size sheets so that you can easily find linens and other bed accessories that fit. They are less likely to sag, so the surface will remain flat to ensure adequate support over time. They are built with a solid design, so they can sustain more weight than other kinds of mattresses. One downside is that they tend to be quite heavy, so you'll need at least two people to flip them over. Take a look at this split california king-size mattress if you want to get a 12-14 inch mattress.

14-16 Inch Mattresses

There's only one split california king-size mattress with a thickness of 14-16 inches. Less likely to cave in, these 14-16 inch mattresses will provide adequate support while you sleep. They are built with a sturdy design, so they can hold the weight of two people. However, they can be quite heavy, so you'll need at least two people to flip them over or move them around. These are just a few facts to help you decide what kind of split california king-size mattress you need.