... waterproof backing, 100% polyester. Folds up easily into a carry tote, or secure with elastic strap. 50" x 60". Waterproof travel blanket,picnic ... blanket100% nylon waterproof backing, 100% polyester. Folds up easily into a ... Plaid/Black, Forest/Black, Red/Black, Royal/Black Waterproof travel blanket,waterproof recback blanket