OYO BABY Instadry Sheets are Skin-friendly, Heat Free, Breathable, Ultra Soft, Hygienic, Durable, & 100% Waterproof. They keep your mattress protected. The sheet is lightweight and can be carried along with you wherever you go. Available in multi-colors and Five sizes Small/Medium/Large/XLarge and Double Bed. Highly hygienic and breathable waterproof membrane and durable. Holds water up to 8 times it's weight and dries instantly. Reusable, economical, and lightweight. Ready to use anywhere you go.