X MAXSTRENGTH Rope Widely applicable: for crossfit, fitness training, athlete, boxer and sport-lover Optional: available in varied rope length and diameter for fitness levels Benefits: Helps build for abs, arm & core strengthening; Great for Burning Calories and Fat Material: 100% Polypropylene and Polyester, won't fray or leave fibers on the floor, wear resistant and durable, high tensile strength. Easy to Grip: Heat shrink cap ends help keep its shape, Protect your hands and help you obtain better sports training.