3M™ Dual Lock™ Reclosable Fastener MP3541/MP3542 is a rubber based adhesive on the back of a black, polypropylene reclosable fastener.

When Dual Lock™ brand reclosable fasteners are pressed together, hundreds of mushroom-shaped stems interlock with one another. An audible snap announces that the fastener is locked. Compared to hook and loop fasteners, you get improved tensile strength with five times more holding power. Open and close hundreds of times during the life of your product.