Firm Fit Crossfit Jump Rope - Adult Adjustable Speed Wire - Best for Workouts and MMA Exercise High speed wire - Best for double unders, triple unders. Cable does not tangle or kink. 10 FT adjustable jump rope - One-size-fits-all, perfect for people of all sizes, even up to 7 feet tall! Best not only for Crossfit and MMA but also perfectly suited as an exercise for your daily workout. Lightweight yet extremely durable and comes with a LIFETIME WARRANTY. Our passion is fitness. All our products come with a 100% Satisfaction Guarantee. No. Matter. What. Love it or your money back. Get yours now!