Sportsrain Parasheet Beach/Picnic Blanket Parachute nylon fabric weighs little, dries in a snap, and sheds dirt and sand - just shake it off, and it's clean. Large size is ample space for the family or friends to stretch out. Pockets at the corners can be filled with sand so the sheet won't blow away in the breeze Sheet packs compactly into its built-in stuff sack. Sheet is machine-washable and air-dries quickly, plus it's mildew-resistant.