The SLEEP TITE PR1ME Smooth Mattress Protector protects you and your mattress with a 100% waterproof layer that guards against all liquid spills. Soft, smooth fabric is backed by a breathable polyurethane membrane that allows airs to pass while effectively blocking fluids, dust mites and allergens. The UNIVERSAL FIT design, with a thick elastic and deep pockets, keeps the protector tight against the mattress, with no bunching or shifting to disturb your comfort. Best of all, the SLEEP TITE PR1ME Smooth protector is cooler and quieter, giving you top-of-mattress protection without changing the feel of your bed.