Jump Ropes Accessories, Exercise & Fitness, Fun Express, Sports & Fitness, Sports & Outdoors Rainbow Jump Ropes (1 Dozen) – BULK Review by Locustard June 21, 2018 No Comments Rainbow Jump Ropes.These colorful nylon jump ropes feature all the colors of the rainbow and have 5 3/4 Inch wooden handles.Made of nylon. Size: 5 3/4 Inch wooden handles. 7 ft. Sales unit: Per Dozen.