Casper One King Mattress with Head Up Only Base

Choosing this standard king configuration provides a continuous, one-piece sleeping surface, which is often preferred by couples who want to avoid the "cuddle gap" found in split king models. Since this set includes a single king mattress and a unified head-up base, both partners can enjoy the benefits of elevation together on a seamless surface, making it ideal for those who prioritize a traditional bed feel with modern adjustability.

This mattress is specifically engineered for compatibility with adjustable bases. It features a triple-layer design, including a responsive Breathe + Flex Foam and Align Memory Foam, both of which are naturally flexible enough to contour with the base’s movements. The firm Casper Core base ensures the mattress maintains its structural integrity and prevents sagging, even when the head of the bed is frequently adjusted.

Yes, this mattress and its included adjustable base are designed to help with those specific concerns. The head-up only functionality allows you to elevate the upper body, which is a common recommendation for opening airways to reduce snoring and preventing stomach acid from rising. Using the wireless remote, you can find the exact angle that provides relief without the need for bulky pillows or wedges.

This king-sized set is designed with a space-saving profile. While the mattress provides a generous 76"w x 80"l sleeping area, the included RTG Sleep 2900 base is a low-profile 4-inch design. This makes the total height of the set very manageable at roughly 15 inches, ensuring it doesn't overwhelm the visual space in a compact bedroom or an urban apartment.

To maintain the integrity of the foam layers and the waterfall edge border, our experts recommend regular vacuuming as the primary cleaning method. If a spill occurs, we suggest spot-cleaning with mild soap and water only. Because this mattress features a layered support system with a dedicated Casper Core base, it is designed as a "no-flip" mattress; you do not need to flip it, though occasional rotation can help ensure even wear over the years.

The top layer of this mattress is built with signature Breathe + Flex Foam, which is specifically designed with an open-cell structure to enhance airflow and pull heat away from the body. This responsive foam layer, combined with the 11-inch profile, makes it an excellent choice for sleepers in humid or warmer climates who need a mattress that stays cool while providing pressure relief.