M&S Gifts Premium Waterproof/Bed Bug Proof Vinyl Zippered Mattress Protector Cover - Protect Your Bed with This Soft, Comfortable Vinyl Zippered Mattress Cover - 39" X 75" X 10" (Twin) Vinyl TOP MATERIAL: These covers are made with comfortable heavy-duty vinyl and a strong zippered seal WATERPROOF: Great for indoor or outdoor conditions because all covers are 100% waterproof PERFECT FIT: Vinyl Covers are extremly soft, comfortable, and breathable, but also are zippered around the beds preventing any tugging PROTECTION: Protects your mattress from dust, bugs, dirt, and anything else MACHINE WASHABLE: Easily clean with Machine Washing and Drying