If that extra touch of support is just what you need for a sound night’s sleep, the Euclid Avenue ultra-firm foam California king mattress is your dream destination. Rest assured, it aims to please with targeted support for your back and core provided by an extra-supportive gel memory foam placed in the middle of the mattress. Plus, you’ll benefit from more support for your whole body and pressure-relieving comfort with a unique coil design and additional memory foam–all topped with a refreshing cool-to-touch cover and an ultra-firm foam feel.