When your product requires thousands of easy openings and secure closings, eliminate the work and weight of metal closures and choose 3M Hook and Loop Fasteners. 3M Hook and Loop Polyester Fasteners are engineered specifically for outdoor and indoor applications that demand high durability. Fastener consists of two woven strips, one covered with stiff hooks, the other with pliable loops. Press together to fasten; pull apart to separate. Open and close up to 5,000 times.