Buy Jump Ropes Double Unders Jump Rope A favorite at CrossFit, Garage Gym, Rogue Fitness and other major fitness centers and fitness retailers Unbelievably fast; Original Design with 2 year guaranty on plastic handles Unique with its ability to easily change lengths; high-quality USA made cable Most used rope for Double Unders and Speed Jumping; Assembled in USA USA made cable comes at 10'; Tall enough for jumpers 6' 6"(Using Proper form)