Night Therapy 9-Inch Premium Spring iCoil Mattress, King Polyester jacquard cover features quilted fiber padding an 1.5 of super soft foam for comfort and conforming support 7.5 base layer of independent spring iCoils assures no motion transfer from a sleeping partner, while maintaining customized spinal alignment Foam is CertiPUR-US Certified for durability, performance, and content All Night Therapy mattresses meet the requirements of 16 CFR Part 1633-Federal flammability standards Our patented compression technology allows our mattresses to be compressed, rolled and shipped in a box via FedEx