A fastener made of tiny catches
These strips work through mechanical interlocking, not glue. One surface is covered with small, stiff hooks; the other has soft loops, like miniature fabric rings. Pressing the two sides together pushes hooks into the loops, where they snag and hold the layers against each other.
The grip comes from thousands of tiny catches working at once. Pulling straight outward makes many hooks resist together, while peeling one edge back releases them a few at a time. That is why the fastener can hold firmly yet still be opened without damaging the fabric.
Why opening it makes a ripping sound
As the fastener is peeled apart, hooks keep catching and then snapping free from loops. Each release is small, but many happen in rapid succession across the strip. Their combined vibrations travel through the fabric and air as the familiar scratchy rip. The sound is not a separate feature: it is a by-product of the same repeated catches that create the grip.
Because the surfaces can be pressed together again, the fastener is reusable. But its performance depends on the hooks and loops staying clear enough to engage; lint or wear can interfere with those tiny connections. What feels like one simple fastening action is really a crowd of microscopic catches being made—or released—together.
