Best Split King Size Mattresses of 2025

The Nectar Adjustable Bed offers a customizable sleep experience with its independent head and foot elevation feature, allowing you to find your ideal position for restful nights. You can enjoy the convenience of a 365-night trial, giving you ample time to test how the mattress performs through different seasons. The gel memory foam construction ensures you stay cool while providing the support your body needs. Additionally, with smart technology accessible via an app or remote, you can easily adjust your bed settings, making it simple to create a personalized sleep environment.

The Blissful Nights e4 Split Head Flex Top King Size Adjustable Bed Frame Set is a great choice for those looking for a comfortable and adjustable sleeping experience. It comes with a 12" Copper Gel Infused Memory Foam Mattress that is medium firm and a wireless remote with batteries included. It also features temperature regulation, air channel base, articulating grooves, and USB ports for charging devices. Customers have praised the bed for its comfort and adjustable features.

The DynastyMattress LaComfort 14-Inch Gel Memory Foam Mattress is a luxurious and comfortable mattress that features 2 inches of pure 4-pound gel memory foam for ultimate comfort. It includes a washable cover, a layered design for restful sleep, and a medium firmness great for all types of sleepers. Dynasty Mattress delivers a cool, lightweight, and extra-soft sleeping solution in the LaComfort mattress.

The Bridgevine Home Hybrid Mattress offers a convenient mattress-in-a-box design, making it easy for you to receive it right at your doorstep. Once unpacked, allow 24 to 48 hours for it to fully expand. This mattress features a unique 6-layer construction, starting with a cool Blue Ice Yarn breathable cover that keeps you comfortable throughout the night. The plush layer includes 1.5 inches of cooling copper-infused memory foam, providing excellent support and pain relief. Additionally, the premium sustainable Talalay latex layer enhances airflow, ensuring you stay cool as you sleep.

The Blissful Nights Split King Adjustable Bed & 12" Copper Gel Memory Foam Mattress is a great combination of comfort and convenience. The adjustable bed base allows you to customize your sleeping position, while the 12" Copper Infused Medium Firm Memory Foam Mattress provides a medium-firm sleeping surface and support. The air channel base and articulating grooves in the mattress allow for proper air circulation and natural temperature regulation as you sleep. Customers report that the bed is easy to install and the mattress is comfortable, with many noting the great price for the set.

The Purple Mattress (Split King) is a medium-firm mattress with GelFlex Grid technology that provides cushioning and support. The Grid instantly shifts as you move, and features 1,400+ ventilation chambers for better airflow. It is hypoallergenic, made with recyclable, food-grade and food contact–grade material, and is CleanAir GOLD and CertiPUR-US certified. It is also made in the USA with American-made materials.

The Sven & Son Mattress offers an easy setup with its convenient mattress-in-a-box design, making it simple for you to enjoy a good night's sleep. With a 120-night comfort guarantee, you can rest assured that if it’s not right for you, an exchange is available. The Bionic Cool Gel Infused Memory Foam alleviates pressure on your shoulders and hips while maintaining a comfortable temperature, enhancing your sleep experience. Additionally, the mattress features a quilted cover that helps wick away heat, combined with layers of comfort and support tailored to suit your sleeping style, whether you are a side, back, or stomach sleeper.

The Blissful Nights 12 Inch California Split King Copper Infused Cool Memory Foam Mattress is designed for adjustable bed bases and offers medium-firm support for all sleeping positions. The copper infused memory foam provides support, while the patented edge support offers a medium-firm sleeping surface that isn't too plush nor too firm. The mattress also features temperature regulation technology and quality materials made without harmful chemicals.