The Casper Select 12" Memory Foam Queen Mattress is a Costco-exclusive all-foam mattress featuring four layers of premium foam construction. This medium-firm mattress (firmness rating 6 out of 10) delivers balanced support suitable for all sleeping positions and body types under 300 lbs.

The mattress includes a 1.5-inch breathable open-cell poly foam top layer, 1.5 inches of gel-infused memory foam for pressure relief, 1.5 inches of transitional poly foam providing zoned support for targeted alignment, and a 7.5-inch high-density support foam base for durability and stability. The total 4.5 inches of comfort material provides good pressure relief while the minimal sinkage design creates a floating feel rather than a deep body-hugging sensation.

All foam is CertiPUR-US certified, meaning it contains no ozone-depleting chemicals, harmful flame retardants, heavy metals, formaldehyde, or phthalates. The mattress is fiberglass-free and ships compressed in a box. The queen size weighs approximately 68 lbs.

Purchased at Costco, the mattress includes a 365-night return policy and a 10-year manufacturer warranty. Free shipping and easy returns are included with your Costco membership.