Brand new, unused. 【9mm Thick Rope】This training model uses a 9mm extra-thick PVC rope. It's highly durable and provides sufficient resistance. The length is adjustable, allowing you to customize the rope size to suit your height and jumping style. 【360° High-Speed & Smooth Rotation】Built-in steel bearings ensure smooth rotation even with a heavy jump rope. You can maintain your tempo without tangling, allowing you to focus on footwork drills and core training. 【Non-Slip Silicone Grip】Designed with a grip structure for adult training. The non-slip silicone material provides a stable grip even when you sweat. It reduces hand fatigue even during extended use. 【Detachable 200g Weights for Load Adjustment】You can insert 200g weights into the handles, enabling high-load training exceeding a total of 850g. The ability to "customize the weight" to match your goals and physical condition is a key feature of this adult jump rope. 【Used by Active Professional Athletes】Used by active professional kickboxer Katsumi Sasaki in his daily training. This heavy jump rope allows for efficient training of the whole body, core, and lower body with its unique resistance, making it a full-fledged training tool.