Your mattress will live longer with the help of a hardy Waterproof Mattress Protector from Protect-A-Bed. This microfibre protector leads the fight against a lethal combination of bodily fluids, dead skin cells, bacterial growth, dirt, dust and stains bringing a premature end to the life of your mattress. Lightweight and stretchy, your guest won't even notice they are laying on it such is the smoothness of the surface. The protector fits a double bed and has been test washed 100 times. They also offer protection for those suffering with allergies.Polyester