Features: 1. The steel wire adds the rope weight to keep the shape of the rope when it swings. Not Easy to Tangle.2. It allows you to easily adjust the length of the rope to the ideal measure compatible with your height and training experience.3. The finger ring handles make it easier to grip and not easy to slip. Save more effort for your wrist.4. Promotes high caloric expenditure, helping to lose weight. Perfect for indoor and outdoor workout.5. Note: Kids should use this product under the adults' supervise. Notice: Actual color may be slightly different from the image due to different monitor and light effect. Please allow 1-3cm deviation due to manual measurement. Description: Material: steel, PVC Length: 3 metersRope diameter: 2.5mmRing diameter: 18cm Battery: no Color/Style: As the picture shown