Our Serenity model features superior support and durability. It is built with a high-density foam core and has a one-sided design. Approximately 4 inches of high-density memory foam creates a medium-soft feel while an air flow layer helps to prevent the sensation of “sleeping hot” and improves surface response time. The matching, real-working box spring is 8 inches high with an additional wood slat for extra support and acts as a shock absorber to help extend the life of the mattress. Full and queen-size split box springs are available
All king and California king sets come with a two-piece split box spring.