Best Split King Mattresses of 2024: Our Expert-Tested Top Picks

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A split king mattress is a versatile and innovative bedding solution that offers enhanced comfort and individualized support for couples. This type of mattress is specifically designed to accommodate different sleep preferences, as it consists of two separate twin XL mattresses placed side by side on a single bed frame. Each side of the mattress can be customized with different firmness levels, allowing partners to choose their preferred level of comfort without compromising on quality sleep.

There is a wide range of split mattresses in the market at the moment due to its popularity, which makes it a bit hard for customers to find the right mattress for them, that’s why in this list we compiled for you the best-split king mattresses in the market after testing many of them, to help you find the right mattress for your sleeping needs.

Top Picks Reviews

Best Overall

Helix Midnight Luxe Mattress

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Price range:
$1,030.32 - $2,155.32
Material:
Hybrid
Firmness options:
Medium
Trial period:
100-Night Sleep Trial
Warranty
15 Year Warranty
Shipping & returns:
Free Shipping
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Why is the Helix Midnight Luxe Mattress the Best Overall?

  • Zoned Lumbar Support: Offers tailored support to align your spine and enhance comfort.
  • Premium Quilted Pillow Top: Delivers a luxurious feel and advanced cooling technology.
  • Customizable Cooling Options: Choose between breathable TENCEL™ or GlacioTex™ Cooling Cover for optimal temperature regulation.

The Helix Midnight Luxe Mattress stands out with its premium features designed to enhance sleep quality. It offers zoned lumbar support for optimal spine alignment and a premium quilted pillow top that delivers advanced comfort and a luxurious feel. Additionally, users can choose between a breathable TENCEL™ cover or the advanced GlacioTex™ Cooling Cover, both engineered to improve airflow and keep you cool throughout the night.

Certified to be free from harmful chemicals, the Helix Midnight Luxe Mattress caters to various sleep preferences with its medium firmness, making it an excellent choice for couples. Its luxury memory foam provides pressure point relief, especially for side sleepers, ensuring a restful and uninterrupted sleep experience. This mattress combines the best of comfort, support, and cooling technology.

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Best Value

Bear Star Hybrid Mattress

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Price range:
$1,049 - $2,238
Material:
Hybrid
Firmness options:
Medium-Firm

Why is the Bear Star Hybrid Mattress the Best Value?

  • Advanced Cooling Technology: Features HydroCool® and Celliant® fiber for a cool and fast-drying sleep surface.
  • Enhanced Edge Support: Extra strong edge coils provide superior support and reduce roll-off.
  • GREENGUARD Gold Certified: Meets rigorous emissions standards for a healthier sleep environment.

The Bear Star Hybrid Mattress combines advanced materials and innovative design to deliver exceptional comfort and support. Its 13-inch profile features a hand-quilted cover with HydroCool® technology and Celliant® fiber for a cool, fast-drying sleep surface. The Serene Gel Foam layer provides cooling and pressure relief, while responsive comfort foam adapts to all body types and sleep positions, ensuring a comfortable night’s rest.

Edge-to-edge individually encased coils reinforce the mattress’s structure, offering superior support and durability. This mattress is GREENGUARD Gold Certified, ensuring low emissions and a cleaner sleep environment. The Bear Star Hybrid Mattress balances luxury and functionality, making it a top choice for those seeking quality and value.

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Best Luxury

Puffy Monarch Mattress

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Price range:
$3,349 - $6,698
Material:
Hybrid
Firmness options:
Soft
Trial period:
101-Night Trial Period
Warranty
Lifetime Warranty
Shipping & returns:
Free Shipping and Easy Returns
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Why is the Puffy Monarch Mattress the Best Luxury?

  • Ultimate Temperature Regulation: Deluxe alpaca wool adapts to the climate, providing moisture wicking and thermal regulation.
  • Exclusive Latex and Cushioning Foams: Enhance spinal alignment and provide luxurious softness and pressure relief.
  • Advanced Cooling Technology: Features a cool-to-the-touch quilted cover and multiple cooling-infused layers for optimal comfort.

The Puffy Monarch Mattress offers a luxury-plush feel with its innovative 12-layer design, making it the most decadent model in the Puffy collection. Its hypoallergenic alpaca wool and cool-to-the-touch quilted cover enhance breathability, while exclusive latex and cushioning foams provide unparalleled spinal alignment and pressure relief. This mattress is designed to deliver ultimate cooling comfort and help reduce back pain, ensuring a luxuriously soothing and supported sleep experience.

With layers of cooling-infused materials and advanced air circulation technology, the Puffy Monarch Mattress suits all sleeper types. The combination of a soft pillow top layer, responsive latex, and contour-adapt coils ensures full-body support and motion stability. Made in the USA, this mattress is crafted to offer the perfect balance of comfort, support, and luxury.

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Most Comfortable

PlushBeds Botanical Bliss Mattress

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Price range:
$1,499 - $4,248
Material:
Organic Latex
Firmness options:
Medium - Medium-Firm
Trial period:
100 Nights
Warranty
Lifetime Warranty
Shipping & returns:
Free Shipping
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Why is the PlushBeds Botanical Bliss Mattress the Most Comfortable?

  • Organic Materials: Made with GOLS and GOTS certified organic latex, cotton, and wool for a healthy sleep environment.
  • Customizable Options: Available in various heights and firmness levels to suit individual comfort needs.
  • Orthopedic Endorsements: Recommended by specialists for its superior support and pressure relief.

The PlushBeds Botanical Bliss Mattress offers exceptional comfort with its organic materials and customizable options. Available in three heights and multiple firmness levels, it features GOLS certified organic latex, GOTS certified organic cotton, and GOTS certified organic wool, ensuring a healthy and supportive sleep environment. This mattress is highly recommended by orthopedic specialists and chiropractors for its ability to provide soothing pressure relief and superior support.

Handcrafted in California, the Botanical Bliss Mattress boasts numerous organic certifications, including GREENGUARD Gold, which guarantees low emissions. The natural latex comfort layer and dense support core provide cushioned support and durability, while the organic cotton cover ensures a chemical-free sleep surface. With its outstanding durability and Lifetime Warranty, this mattress delivers a luxurious and rejuvenating sleep experience.

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Best for Couples

Brooklyn Bedding Signature Hybrid Mattress

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Price range:
$498.80 - $1,199.30
Material:
Hybrid
Firmness options:
Soft, Medium, or Firm
Trial period:
120 Nights
Warranty
10 Year Warranty
Shipping & returns:
Free Shipping and Easy Returns

Why is the Brooklyn Bedding Signature Hybrid Mattress the Best for Couples?

  • Superior Motion Isolation: Individually encased coils reduce motion transfer for undisturbed sleep.
  • Customizable Comfort: Available in soft, medium, and firm options to meet diverse preferences.
  • High-Quality Materials: Features premium foams and steel coils for long-lasting comfort and support.

The Brooklyn Bedding Signature Hybrid Mattress combines high-quality foams and individually encased coils to deliver optimal pressure relief and targeted support. Its Supreme Response Comfort Foam and VariFlex™ transition foam provide buoyancy and breathability, ensuring best-in-class comfort. The customizable comfort options include soft, medium, and firm settings, with an optional Cozy-as-a-Cloud Cooling Pillow Top for advanced cooling and contouring.

Designed for durability and long-lasting performance, this mattress features high-density foam layers and premium steel coils, both manufactured in-house. The hybrid design offers superior motion isolation, making it an ideal choice for couples. Shipped factory-direct, the Brooklyn Bedding Signature Hybrid Mattress ensures high quality at an ideal price.

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Best for Heavy Sleepers

Titan Plus Mattress

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Price range:
$699 - $1,499
Material:
Hybrid
Firmness options:
Firm
Trial period:
120-Night Trial
Warranty
10-Year Warranty
Shipping & returns:
Free Shipping and Returns
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Why is the Titan Plus Mattress the Best for Heavy Sleepers?

  • Durable Support: High-density foams and 900 steel coils prevent sagging and provide lasting support.
  • Cooling Technology: Gel-infused foam and optional GlacioTex™ Cooling Cover maintain a cool sleep environment.
  • Pressure Relief: Firm layers offer optimal pressure relief and support for tall, big, and strong individuals.

The Titan Plus Mattress is engineered specifically for heavy sleepers, offering firm support and long-lasting durability. Its high-density foam layers provide optimal pressure relief and support, ensuring a sag-free and comfortable sleep surface. The mattress features a core of up to 900 individually encased TitanCore coils made from 100% steel, designed to offer strong edge support, excellent motion isolation, and lasting comfort.

Cooling technology is a key component of the Titan Plus Mattress, with a gel-infused top foam that draws heat away from the body. For enhanced cooling, the optional GlacioTex™ Cooling Cover provides a cool-to-the-touch experience. This mattress combines strength, support, and cooling to meet the needs of plus-size sleepers, ensuring a restful and undisturbed sleep.

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Best Cooling

Amerisleep AS5 Mattress

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Price range:
$1599 - $3348
Material:
Foam
Firmness options:
Plush
Trial period:
100-Night Free Trial
Warranty
20-Year Warranty
Shipping & returns:
Free Shipping
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Why is the Amerisleep AS5 Mattress the Best Cooling?

  • Bio-Pur® Memory Foam: Plant-based foam with an open-cell design allows for increased airflow and cooler sleep.
  • Refresh Cover: Scientifically engineered fabric draws heat from your skin, keeping the surface 7 degrees cooler.
  • Far Infrared Energy: Improves blood circulation and muscle recovery, enhancing overall sleep quality.

The Amerisleep AS5 Mattress combines ultra-soft pressure-relieving memory foam with supportive Active Flex to offer exceptional comfort for side sleepers, combo sleepers, and heavy sleepers. Its plant-based Bio-Pur® memory foam keeps you cool throughout the night with an open-cell design that allows for better airflow compared to traditional foam. The durable base foam prevents sagging and uncomfortable sinkage, ensuring a supportive sleep surface.

Equipped with the innovative Refresh Cover, the AS5 mattress enhances cooling comfort by drawing heat away from your skin, maintaining a cool-to-the-touch feel. This cover also supports improved blood circulation and muscle recovery by converting natural body heat into far infrared energy. Overall, the Amerisleep AS5 Mattress delivers a cooler, more breathable, and eco-friendly sleep experience.

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Best for Side Sleepers

SONU Sleep System

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Price range:
$2,499 - $4,298
Material:
Foam
Firmness options:
Plush or Firm
Trial period:
100-Night Sleep Trial
Warranty
10-Year Warranty
Shipping & returns:
Free Shipping and Easy Returns
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Why is the SONU Sleep System the Best for Side Sleepers?

  • Patented Comfort Channel: Allows arms and shoulders to immerse fully into the mattress, reducing pressure points.
  • Adjustable Support Pillows: Provides customizable support for optimal comfort and spine alignment.
  • Cooling Cover: Regulates temperature with phase change material for a cool and comfortable sleep experience.

The SONU Sleep System is revolutionizing sleep for side sleepers with its innovative design and unique features. Its patented Comfort Channel allows arms and shoulders to fully immerse into the mattress, providing a level of comfort unmatched by traditional mattresses. Accompanied by four Support Pillows, the SONU Sleep System reduces pressure points, ensuring a restful and relieving sleep experience.

Crafted from 26 pieces of premium high-resilience CertiPUR-US® certified foams, the SONU mattress offers durability and ideal support. The cooling cover with phase change material regulates temperature, ensuring a cool and comfortable sleep throughout the night. Adjustable head and neck layers provide perfect alignment, making it an exceptional choice for side sleepers.

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Best Organic

Latex for Less Organic Latex Mattress

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Price range:
$1,699 - $3,599
Material:
Organic Latex
Firmness options:
Soft - Medium - Firm
Trial period:
120-Night Sleep Trial
Warranty
20-Year Warranty
Shipping & returns:
Free Shipping and Easy Returns
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Why is the Latex for Less Organic Latex Mattress the Best Organic?

  • Certified Organic Materials: Made with GOLS certified organic latex, GOTS certified organic wool, and organic cotton for a healthy sleep environment.
  • Handcrafted Quality: Manufactured in Southern California with expert craftsmanship and attention to detail.
  • Eco-Friendly Production: Local manufacturing reduces emissions and supports a healthier planet.

The Latex for Less Organic Latex Mattress offers award-winning organic comfort at an affordable price, featuring the finest certified organic materials. Made with organic cotton, wool, and latex, this mattress ensures a healthy and luxurious sleep experience. The ultra-soft organic cotton cover provides a welcoming sleep surface, while the organic wool fire barrier keeps you cool and exceeds safety standards without toxic chemicals.

The mattress includes a 3-inch GOLS certified organic latex comfort layer that naturally molds to your body's curves, offering unbeatable comfort. The 6-inch GOLS certified organic latex mattress core delivers long-lasting support, guaranteed never to sag. Handcrafted in California, this mattress combines impeccable quality with eco-friendly manufacturing practices, reducing emissions and supporting the local economy.

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What is a split king mattress?

A split king mattress is a type of mattress that is designed to accommodate couples who have different sleep preferences. It consists of two separate twin XL mattresses placed side by side on a single bed frame. This allows each person to have their own individual sleeping surface while still being able to share the same bed.

The split design also allows for adjustable features, such as independently adjustable firmness levels and elevation settings. This type of mattress is especially popular among couples who have different sleeping patterns, body types, or health conditions that require customized comfort and support. Overall, a split king mattress offers a flexible and personalized sleeping solution for couples.

Pros of a split king mattress?

A split king mattress is a popular choice for couples who have different sleep preferences or needs. It offers several benefits that make it a desirable option for many people. One of the main advantages of a split king mattress is its ability to provide personalized comfort.

Personalized Comfort

Each side of the mattress can be adjusted independently, allowing each partner to choose their preferred level of firmness or softness. This is especially beneficial for couples with different body types or sleep preferences, as they can customize their side of the bed to suit their individual needs.

Reduced Motion Transfer

Traditional mattresses can be prone to transferring movement from one side of the bed to the other, which can disturb the sleep of both partners. However, with a split king mattress, the two sides are completely separate, which reduces the transfer of motion and allows each partner to sleep undisturbed.

Great for Couples with Different Sleeping Schedules

A split king mattress provides a solution for couples with different sleep schedules. If one partner likes to stay up late reading or watching TV while the other prefers to go to bed early, having separate sides of the bed allows each person to engage in their preferred activities without disturbing the other’s sleep. This can lead to better sleep quality and overall satisfaction for both individuals.

Cons of a split king mattress?

A split king mattress may seem like a convenient option for couples who have different sleep preferences, but there are some cons to consider before investing in one. One of the main drawbacks is the

Potential for a Gap Between the Two Mattresses

This gap can be uncomfortable and disruptive, especially for couples who like to cuddle or sleep close to each other. The gap can also become a magnet for dust, debris, and even pets, which can make it difficult to keep the bed clean and hygienic.

Price Range

Split king mattresses are typically more expensive than traditional king-size mattresses because they require two separate mattresses and sometimes a special bed frame or base. This can make it a significant investment, especially if you're on a tight budget.

Limited Bedding Choices

Additionally, finding bedding that fits properly can be challenging and may require purchasing separate sheets, blankets, and duvets for each side of the bed.

What to consider before buying a split king mattress?

Size

A split king mattress typically consists of two separate twin XL mattresses, which are placed side by side to create a king-sized bed. Therefore, it is crucial to ensure that the dimensions of each twin XL mattress fit comfortably within your bedroom space.

Height

You should also consider the height and thickness of the mattress, as this can impact the overall comfort and aesthetic appeal of your bed.

Material

There are various options available, such as memory foam, latex, innerspring, and hybrid mattresses. Each type has its own unique characteristics and benefits. For example, memory foam mattresses are known for their excellent contouring and pressure-relieving properties, making them ideal for individuals with joint or back pain. On the other hand, latex mattresses are hypoallergenic and provide a more responsive and bouncy feel. It is essential to research and test out different mattress materials to determine which one suits your preferences and sleep needs.

Firmness

The firmness level can significantly impact your comfort and quality of sleep. It is recommended to choose a firmness level that aligns with your preferred sleeping position and personal preferences. For instance, individuals who sleep on their back or stomach may benefit from a firmer mattress that provides adequate support and spine alignment. On the other hand, side sleepers may find a softer mattress more comfortable as it helps alleviate pressure points on the hips and shoulders.

Budget

Split King mattresses are usually more expensive than other mattresses that are smaller in size, so before deciding on buying one make sure that you have the budget for it, and consider the material and features of the mattress as they could cause a variance in the price range of the mattress.

Review and Warranty

Before making a purchase, it is advisable to read customer reviews and ratings of the split king mattress you are considering. This will provide you with valuable insights into the overall satisfaction and durability of the product. Additionally, it is also recommended to check for warranty information and return policies offered by the manufacturer or retailer.

FAQs

Can you use king sheets on a split king?

Yes, you can use king sheets on a split king bed. A split king bed consists of two separate mattresses, each measuring approximately 39 inches wide by 80 inches long. When these two mattresses are placed side by side, they create a split king bed that measures approximately 78 inches wide by 80 inches long, equivalent to the size of a regular king mattress.

How much does a split king cost?

The cost of a split king bed can vary depending on various factors such as brand, quality, and additional features. On average, a split king bed can range from $1,000 to $5,000 or more. The price may also be influenced by the type of mattress and adjustable base included in the package.

How do you keep a split king mattress from separating?

To keep a split king mattress from separating, there are a few techniques you can try. Firstly, you can use a mattress connector or a bed bridge to connect the two separate mattresses together. These devices are placed between the two mattresses and help to hold them in place, preventing any movement or separation. Additionally, using a non-slip mattress pad or gripper can also help to keep the two mattresses in position.

Are split king mattresses comfortable?

Split king mattresses can offer a comfortable sleeping experience for those who prefer a more customized sleep setup. These mattresses are designed to accommodate couples who have different preferences when it comes to mattress firmness. With a split king mattress, each side of the bed can be adjusted independently to meet the specific comfort needs of each individual.

Karen Barnard

Karen is a Human Movement Science expert and a certified sports nutrition and massage therapist. At Sleepiverse, she combines her passion for human movement science and sleep health to educate herself and her readers about healthier sleep. In addition to writing articles, Karen manages a fitness studio offering private training, athletic conditioning, and sports massage therapy. She focuses on providing people with a holistic environment for people to reach their health goals, often incorporating stretch therapy to promote mental tranquillity and help people improve their sleep.