This disc shopping bag is made of high density polyester and plastic disc. Pull tag to release shopping bag and use finger holes to roll bag back up into disk. It's very easy to operate and save space. With a 11 13/16" L x 12 63/64" H storage bag, it can meet daily shopping needs. Bring great convenience to your shopping, outdoors, travel and daily life. 3 35/64" D x 1 29/64" H