Single Twin Size Waterproof Mattress Cover - Hypoallergenic Fitted Protector for Potty Training, Bed Wetters, Allergies, Dust Mites, Bed Bugs - Home Goods By Chris Fitted waterproof plastic protector Durable, Extra soft plastic Easy handling with fitted skirt Can be cleaned easily with damp cloth Size: 39 in x 75 in x 12 in