Easy to Fit - Our Twin XL size mattress cover (39"W x 80"L) is designed like a fitted sheet with stretchable deep pockets, fitting snugly on mattresses from 8 to 20 inches deep, preventing slipping or bunching during sleep.High-Quality and Washable - Made from the finest materials, our waterproof Twin XL mattress protector is durable, long-lasting, and machine washable, ensuring easy home care.Mattress Protection Enhanced - Protect your Twin XL mattress from spills and stains with our waterproof mattress protector accessory, ensuring a worry-free sleep without ruining your mattress.Supporting Local Charities - In 2022 & 2023, we donated over 22,000 bedding pieces to US charities, using eco-friendly packaging and offering a 30-day return policy for confidence in your purchase.Sleep Comfortably - Our Twin XL size mattress protector is not only waterproof but also soft, noiseless, breathable, and cooling, providing a comfortable and undisturbed sleep without feeling hot or sweaty.