Comprehensive Protection: Protect your mattress with our twin XL mattress encasement zippered that provides 360 degree, 6 sided coverage, ensuring it stays clean and fresh; mattress cover twin XL (39 inches width by 80 inches length) fits mattresses 10 to 14 inches deep 100% Waterproof and Breathable: Our premium XL twin mattress cover is 100% waterproof while remaining breathable, offering comfort and effective protection Secure Zipper Closure: Equipped with a durable, high quality zipper and flap, this twin XL mattress encasement ensures a secure fit and complete protection for your mattress Easy Maintenance: Machine washable for hassle free care, our box spring cover twin XL is designed for convenience and long lasting use. Trusted Quality: Our top tier twin XL mattress encasements are crafted with premium materials to ensure durability and reliability. Our mattress encasement provides premium waterproof protection with a secure zippered closure, keeping your mattress clean and comfortable. Designed for comprehensive coverage, it protects against liquids and spills, helping to maintain your mattress in excellent condition. Made from durable, high-quality fabric, this encasement offers 360-degree protection and promotes optimal air circulation for a comfortable sleep experience. The easy-to-use zipper closure ensures straightforward installation, and the snug fit keeps the encasement securely in place without affecting mattress comfort. For convenience, it can be removed and machine washed. This encasement is a practical choice for extending the life of your mattress and maintaining a healthy sleep environment.