The Casper Cooling Select is a 12-inch all-foam queen mattress featuring four layers of premium foam construction designed for balanced comfort and support. The mattress includes two 1.5-inch memory foam layers that provide pressure relief, a 1.5-inch transitional poly foam layer, and a 7.5-inch support foam base for durability and stability.

This medium-firm mattress offers a firmness rating of 6 out of 10, providing good support for sleepers under 300 pounds across all sleeping positions. The design incorporates Zoned Support technology to promote proper spinal alignment and targeted comfort where you need it most. The breathable knit cover is soft to the touch and designed for airflow, though the cooling effect is most noticeable initially.

The mattress features CertiPUR-US certified foam, meaning it's made without ozone-depleting chemicals, mercury, lead, formaldehyde, or phthalates. It exhibits minimal motion transfer, making it suitable for couples. The mattress ships compressed in a convenient box for easy delivery and setup. When purchased at Costco, it includes an exceptional 365-night trial period, a 10-year warranty, and free shipping and returns with no box required.