Hypoallergenic 3" Cooling Gel Memory Foam Mattress Topper with Removable Cooling Cover B035951413" 100% Gel Memory Foam (60% polyester, 40% cooling fiber) adds an instant layer of comfort to your mattress Cooling Gel provides optimal temperature control and sleeping comfort Pressure relieving comfort relaxes muscles Naturally Antimicrobial & Hypoallergenic Cover with zipper features a unique fabrication that is always "cool to the touch" Anti Slip reverse side of cover keeps the topper well in place Oeko Tex Certified, includes no harmful