- Upgraded tangle-free double-ball bearings provide fast, smooth rotation for worry-free jumping. - Gold combination rope system: 9mm braided cotton rope plus 9mm solid PVC rope. This design can extend rope life by at least two times and lets you switch between cotton and PVC rope for a different feel and look. - Aluminum plus silicone grips: Lightweight, durable handles with a comfortable grip. The raised silicone oval texture increases friction and helps prevent the handle from slipping or coming off during jumping. Suitable for Double Unders, WOD, MMA, Boxing and CrossFit training. - Durable construction and precise specs: The 9mm braided cotton rope weighs 0.46 lb and is 10 ft long, featuring a three-dimensional spiral braided structure and a wear-resistant silicone protective tube with no odor. The 9mm solid PVC rope weighs 0.58 lb and is 10 ft long, providing greater wear resistance. Designed for a balance of speed and strength during use. - Practical use scenarios: 1) High-intensity interval training and CrossFit workouts requiring fast, consistent rope rotation. 2) Boxing or MMA warm-ups focusing on footwork and rhythm. 3) Home cardio sessions or endurance training where durability and grip matter. This description preserves the original model features and specifications while delivering a clear, customer-friendly presentation.