Check the listing for details. Sleep Harmony Total Encasement Mattress Protector Full Size Waterproof New. Condition: New with tags, Made in China. Listed at 18.71 USD. Protect your mattress from spills and stains with the Sleep Harmony Total Encasement Mattress Protector in full size. This mattress protector is made of high-quality polyester material and features waterproof technology to keep your mattress dry and clean. It comes with a manufacturer warranty of 10 years and is suitable for use in the bedroom. The Glideaway brand ensures that you get the best quality product that is made with care. This Mattress Protector is perfect for those who want to keep their bed clean and hygienic. The protector is easy to install and remove, making it convenient for daily use. Improve your sleep quality with the Sleep Harmony Total Encasement Mattress Protector.