This product is made of plastic and rope.The size is 5 1/8""L x 3""W, and the rope is 27.5 inch. Are you still worrying about the cleaning of so many socks? Are your socks always easy to lose? Easy to use, put socks one or one pair between two lock buckle, move the lock button to tighten the sock. Please rest assured that the absolute tight, not easy to fall, rest assured that washing in the washing machine, after washing to take out hanging dry. You can design patterns or logos that you like.