Casper Snow 2.0 Split King Mattress with Head Up Only Base

A split king provides the ultimate solution for sleep partners with different needs. Because it consists of two separate Twin XL mattresses, each side can be adjusted independently using its own wireless remote. This allows one person to stay flat while the other elevates the head for reading or health reasons, ensuring that neither partner's comfort is compromised.

While a split king does have a seam between the two mattresses, this physical separation is precisely what provides industry-leading motion isolation. If one partner tosses and turns, the movement is not transferred to the other side. To minimize the feel of the "gap," we recommend using high-quality Twin XL fitted sheets with deep pockets to keep the mattresses pulled tightly together and flush against the base.

Yes. This mattress features Casper’s Zoned Support™ technology, a hallmark of high-quality ergonomic design. The foam is intentionally firmer under the hips, waist, and lower back to prevent the spine from sagging, while remaining softer under the shoulders to relieve pressure. This targeted alignment is crucial for reducing morning stiffness and supporting long-term spinal health.

The RTG Sleep 2900 base is designed to provide targeted elevation for the upper body. Elevating the head can significantly improve sleep quality by reducing snoring, alleviating the symptoms of acid reflux (GERD), and making it more comfortable to read or watch TV in bed. It is a streamlined, reliable solution for those who want the therapeutic benefits of elevation without the complexity of a full-body motion base.

This mattress is specifically engineered to combat heat retention, which is essential for southern climates. It utilizes a three-tiered cooling system: specialty cool-to-the-touch fibers for an instant refreshing feel, Phase Change Material to pull heat away from the skin, and advanced HeatDelete Bands that continuously remove excess body heat. These materials work together to help you sleep up to 5 degrees cooler throughout the night.

This hybrid design combines the pressure-relieving benefits of Soothe Memory Foam with the structural support of individually pocketed Flex Coils. The memory foam contours to your body for a "weightless" feel, while the coils provide a responsive bounce and boost airflow. This combination is particularly durable for use on an adjustable base, as the coils are designed to flex repeatedly without losing their integrity.

For a split king setup, you will need "Split King" sheet sets, which typically include two Twin XL fitted sheets and one King-size flat sheet. Because the head of the mattress moves, our expertise suggests choosing sheets with strong elastic or corner straps to ensure the fitted sheets stay securely in place during adjustment.