LuvLap Instadry Sheets are Skin-friendly, Heat free, Breathable, Ultra Soft, Hygienic, Durable, & 100% Waterproof. They keep your mattress protected. The Instadrysheet protects from stains, spills, moisture, including incontinence and sweat. The sheet is lightweight and can be carried along with you wherever you go. Available in multi-colors and three sizes Small/Medium/Large.