VELCRO Brand Industrial Strength Hook (hard side) and Loop (soft side) tape is composed of Hook 705 and Loop 1000. They offer an aggressive closure system for indoor and outdoor use with a superior water resistant rubber-based adhesive suitable for most smooth surfaces, including plastic. The 25 yard rolls allow you to purchase adequate supply for larger projects or annual requirements at a cost savings. 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