JumpNRope World Champion Speed Wire Jump Rope - #1 Best for Crossfit - Patented Technology - Fully Adjustable - Proudly Made in the USA USED BY THE WORLD'S BEST - No less than FOUR WORLD RECORDS have been set using this jump rope. Multiple World Champions call this their rope of choice. Why? Because rope choice matters, and these guys can tell the difference. If you could do 1,000 double unders or jump 400 beats per minute, wouldn't you choose the the best equipment too? PATENTED TECHNOLOGY WE INVENTED - The technology behind this uniquely patented handle is owned by JumpNrope. WE INVENTED IT. You won't find a faster, smoother, higher performing jump rope anywhere. Yes there are imitators, but don't be fooled - This is THE ORIGINAL...designed, built and sold to you at the source. SIMPLE, DURABLE, LASTING - Highest quality glass-filled nylon handles, multi-stranded stainless steel cable, dual stainless steel precision bearings. Meticulously hand made in Colorado with high quality U.S. materials. This product stands up to the high demands of amateur and professional athletes alike. ADJUSTABLE TO ANY SIZE AND SKILL LEVEL - A quick turn of the sizing collar is all it takes to fit this rope to ANY height and skill level. Use included crimp for a more permanent fit. Handles come in two sizes to fit a wide range of hands and turning preferences WE STAND BEHIND OUR PRODUCTS - At JumpNrope, customer experience is at the core of everything we do. If youre not completely satisfied, tell us. Well do everything we can to fix whats wrong and win back your business and your respect.