When your product requires thousands of easy openings and secure closings, eliminate the work and weight of metal closures and choose DuLok Hook & Loop Fasteners. DuLok is two woven strips, one covered with stiff hooks and the other with soft loops. Press together to fasten, pull apart to open. Works up to 5000 times before needing replacement. Available with a pressure sensitive adhesive backing or a plain backing for sewing or stapling.