TIPS TO RETURN TO NORMAL THICKNESS - Spread it in an airy place for a few days or lay it in the sun for a few hours before use. HYPOALLERGENIC - Filled with hypoallergenic down alternative fill, this mattress pad has the feel of real down without the pocking feathers or allergies, the best option for people who are allergenic to goose or duck down, offering sweet and sound nights without runny eyes or stuffy noses. WATERPROOF - PEVA waterproof technology. FABRIC - 100% cotton FILL - 100% polyester KING SIZE - 33.1 oz QUEEN SIZE - 25.4 oz FULL SIZE - 21.5 oz TWIN SIZE - 15.5 oz DIMENSIONS - KING SIZE - 78" x 80" x 15" QUEEN SIZE - 60" x 80" x 15" FULL SIZE - 54" x 75" x 15" TWIN SIZE - 39" x 75" x 15" CARE INSTRUCTIONS - Machine wash