The Mega Mat ® by Oak & Olive is the ultimate take-a long companion for any outdoor activity. With a 100% fully waterproof backing, and foam padded lining, you and your bottom will be comfortable and will stay perfectly dry. The Mega Mat, all season waterproof blanket, features a soft woven breathable acrylic top, an adjustable shoulder strap for easy carrying. Perfect for Beach, Playground, Concerts, Picnics, Sports. Opens to 48"x 60".