Kamileo Jump Rope, Adjustable Speed Jump Rope for Boxing MMA Fitness Crossfit Workout, Aluminum Anti-Slip Handles (with eBook, Poster, Cooling Towel Carry Bag, Cable Protector) ULTRA FAST SPINNING  Kamileo jump rope is perfect for anyone from professional boxers to cross trainers to beginners who want to get in shape and master double unders, triple unders and long cardio sessions SUPREME ALUMINUM DESIGN  Anti-slip Aluminum handles with foam coating grips cushion your hands and give you the perfect grip on the handles; the steel cable is coated with a PVC sleeve for protection and better durability 360SWIVEL BALL BEARING  The combination of ball-bearing system and two-hole screw locks effectively prevent kinking or tangling; help you keep a high momentum and reach extreme speeds up to 320 jumps per minute COOLING TOWEL CARRY BAG  The jump rope comes with a carry bag made of breathable mesh fiber; easy to sweat off your hands and continue jumping; remain your body cool and comfortable throughout the exercise BONUS ITEMS  eBook, posters (2-color options), cable protector, carry bag, printed instruction guide, extra components including screws, locks, cables, clips are all in Kamileo jump rope package