VELCRO Brand Industrial Strength Hook Loop Tape is an agressive molded hook woven loop closure system with a superior water resistant rubber based adhesive for indoor and outdoor use. Just peel the liner and press into place. The adhesive will achieve 80% bond strength in about an hour and full strength in 30 hours. Easy to use. 2 x 4' VELCRO, ONE WRAP, and STICKY BACK are registered trademarks of Velcro Industries B.V.