Safe & Comfortable Sleep: Enjoy a clean, comfortable bed with our breathable mattress encasement that protects your mattress from everyday elements. Stretchable Fabric Fit: Made from 100% polyester that stretches to fit pillow-top mattresses 9' to 15' deep for a snug, secure fit. Water-Resistant Barrier: Shields your mattress from liquids, stains, sweat, odors, and other messes to keep it fresher longer. Bed Bug & Allergen Protection: Durable fabric traps bed bugs, dust mites, and other pests, preventing infestations and promoting better sleep. Easy to Clean & Install: Machine washable on gentle cycle with a 3-sided interlocking zipper for quick, hassle-free setup and removal.