Sleep Master Memory Foam 8 Inch Sport Mattress and Easy To Assemble SmartBase Mattress Foundation/Platform Bed Frame, King Active Response Foam layering system features 2" of gel memory foam with 1.5" of Viscolatex foam and 4" Comfort Curve HD foam base Easy to Assemble Smart Base offers 12.5 Inch of clearance for under bed storage Assembles easily to provide strong, level support for your mattress Patented compression technology allows our mattresses to be compressed, rolled and shipped in one box with the Easy-to-Assemble Smart Base All Foam is CertiPUR-US Certified for durability, performance and content with 10-year limited warranty