Biker Boot Straps US Army Strap Set Biker Boot Straps are weatherproof straps that are constructed from the best rubber and nylon. They can be stretched out yet still bounce back with continuous use. Clips are made of a nylon material with a spring steel insert to keep pressure on the pant cuff. Sure-Lock Technology holds on strong and stays connected and keeps your pants from inching up while you ride. Features: Nylon clips Self adjusting rubber strap won't get in the way 4 strap stretches to roughly 7 (Men's boot size 8 and below) 6 strap stretches to roughly 11 (Men's boot size 9 and above) Replacement clips and straps available