65% Preforated Fabric, 21% Polyester, 10% Recycled Cotton, 2% Rayon, 2% Spandex Comfy Topper helps prevent overheating with Airscape 2 perforations for breathability, contains two foam layers 3” thick to cradle you in comfort and help you fall asleep faster and sleep through the night The Comfy Mattress Topper combines a plush and responsive top later with cradling and supportive memory foam.