The jumping rope has other improvements as well: the handles include rolling-bearing to add more speed. This makes the difference when you are trying to do as many double-jumps as possible in just one set. The handles are made of nylon, reinforced with glass fiber, to ensure high resistance. The wire, made of steel, has a nylon coating to improve protection and to avoid unwanted knots. It can be adapted to tall users (max. 2 m) and it can be easily adjusted with a Philips screwdriver.