This is a set of two items. ■ Produced by Hijiki Ikuyama, the Guinness World Record holder for skipping rope (6 titles) ■ Features a newly developed, beautiful fiber rope that overcomes common skipping rope issues: * Doesn't leave marks! * Doesn't break easily! * Doesn't stretch! * Easy to jump with! ■ Weights inside the grips stabilize the wrists, making it easier to perform multiple jumps with a beautiful form. ■ Jumping with a rope of appropriate weight helps improve posture, strengthens the core, enhances balance, and corrects skeletal misalignment. ■ Directly supports coordination exercises currently emphasized in schools. ■ Durable rope with fiberglass fiber bundles. ■ Features 16.5cm grips, chosen as the easiest to jump with after monitoring across all age groups. ■ Grip covers keep hands warm in winter. ■ Includes a storage bag for convenient portability.