The Loop is Made of 100% Nylon which is highly elastic, durable, and not easy to cause static. They can also be washed and reused multiple times. On the loop roll only one side is loop. The two rolls are a pair, Washable, and Reusable. Package includes both 4" Width 5Yards Length hook Volume and 4" Width 5Yards Length loop Volume. Our products can be widely used in various applications, and all of them are easy and convenient to use. Attention: This product is without adhesive!