The Sonic Boom M2 jump rope is the fastest, smoothest, all-around best option for athletes that mean business. Increase your cardio capacity, balance, agility, speed, coordination, conditioning, and endurance for a full-body and mind workout from anywhere - no matter where you're in the world! Comes with 2 x 10 ft cables, handy carry case, luxury gift box & FREE 2.5 hour Jump Rope Mastery online video course 'built better. Period' SCREW-FREE SELF-LOCKING No Pre-Cutting to Size, Auto-Locks for Fast Customization Stores Excess Rope in Handles.