Split King Mattresses

About Our Split King Mattress Collection

A split king mattress setup consists of two twin XL mattresses, each measuring 38 inches by 80 inches, placed side by side on a king-size bed frame or adjustable bed system. The total footprint of 76 by 80 inches matches a standard king exactly. Still, the two-mattress construction gives each partner complete independence over their firmness level, adjustable base positioning, and sleep environment.

A split king is the most popular configuration for couples using dual adjustable bases, as it allows each side to elevate independently, so one partner can watch TV with the head raised. At the same time, the other sleeps flat with no disturbance on their side.

At Cloudy, our split king collection features twin XL mattresses from across our full lineup, available in memory foam, hybrid, cooling, firm, and plush constructions across every price point.

What to Look for in a Split King Mattress

Here is what you need to look for in a split king mattress:

Split King Dimensions 

Each twin XL in a split king measures 38 inches by 80 inches. Two placed side by side create a total surface area of 76 by 80 inches, matching a standard king mattress exactly.

Adjustable Base Compatibility 

These mattresses are designed to work seamlessly with dual adjustable bases, allowing two Twin XL mattresses to sit side by side on separate foundations.

This setup lets each sleeper independently adjust the head and foot of their bed to their preferred positions, making it easy to customize comfort for reading and watching TV.

Dual Firmness Customization 

Each partner in a split king setup can choose a completely different mattress, from a firm, supportive hybrid on one side to a plush or memory foam on the other. This is the most complete sleep customization available in any standard bed configuration.

Cooling Gel-Infused Foam 

Many split king mattresses in our collection feature cooling gel-infused foam that helps regulate sleep temperature independently on each side, which is particularly useful when both partners have different temperature preference. 

Independent Motion Isolation 

Because the two twin XL mattresses are physically separate, movement on one side creates zero motion on the other, making a split king the gold standard for motion isolation in a shared bed.

Explore Split King Mattresses at Cloudy

Our split king collection features individually selectable twin XL mattresses from brands across our full lineup, available in memory foam, hybrid, cooling, firm, and plush constructions.

Who It's For

Many customers are often confused about which mattress size to choose. Here is everything you need to know about choosing the perfect mattress; 

Different Firmness Preferences

A split king mattress lets each partner choose the firmness that best suits their sleep style, making it easy to enjoy personalized comfort without compromising on a shared mattress.

Adjustable Bases

Designed to pair with two Twin XL adjustable bases, a split king gives each sleeper independent control over head and foot positioning for a fully customized sleep experience.

Light Sleepers

With two separate Twin XL mattresses, motion is less likely to transfer from one side of the bed to the other, helping reduce sleep disruptions caused by a partner's movement.

Individual Sleep Needs

Whether one partner prefers extra support or benefits from sleeping in an elevated position, a split king makes it easy to create a personalized sleep setup for both sleepers.

Different Sleep Schedules

If one partner goes to bed earlier, wakes up frequently, or gets up before the other, a split king can help minimize disturbances and make it easier for each person to maintain their own routine.

Long-Term Flexibility

A split king allows you to replace or upgrade one Twin XL mattress without replacing the entire bed, making it a practical option as comfort needs change over time.

Why Trust Cloudy for Split King Mattresses?

Here is what to look for when buying a hybrid mattress, and how the Cloudy collection is built around those criteria. 

1. Authorized Retailer

Cloudy is an authorized retailer of renowned mattress brands in our split-king collection, so that you can shop with confidence. All the split king mattress products are authentic and are backed by the manufacturer’s warranty.

2. Risk-Free Sleep Trial

At Cloudy, most mattresses in the category come with a 120-night sleep trial, giving each sleeper time to make sure their mattress is the right fit.

3. Manufacturer Warranty

Every mattress in Cloudy’s split king collection includes a manufacturer's warranty. This lets you make an informed decision, as every product comes with an official manufacturer’s warranty. 

4. Free Shipping

Enjoy free shipping on every split king mattress order, with both Twin XL mattresses delivered at no extra cost. Place your orders via Cloudy now.

5. Certified Safe Foam

Foam mattresses in our collection feature CertiPUR-US® certified foam, meaning they’re independently tested to meet recognized standards for safety, emissions, and durability.

What Buying Looks Like

Buying a split king mattress on Cloudy is simple and risk-free. Every product you order reaches you safely and quickly. Other benefits of buying with Cloudy include:

• Free delivery on all split king orders

• In stock and ready to ship

• 120-night sleep trial

• Manufacturer warranty included

• Sale pricing available

• Buy online with financing available