Discover the support and comfort of our Cushion Firm mattress, equipped with a sturdy high-density 8" foam core and a slightly firmer 2" Serene® foam comfort top layer for a consistently supportive feel. Outclassing traditional memory foam, products from the Serene® Collection boast the most advanced foam on the market. Enhanced with Supportive Air Technology™, Serene® foam raises the level of support while maintaining optimal comfort.