1. This bouncing ball is a fun sensory training tool for kindergartens, especially suitable for single-leg fitness exercises. 2. It is made of plastic, ensuring durability and safety for children to use. 3. The length of the rope is approximately 21.65 inches (55 cm). 4. The diameter of the ankle ring is about 5.91 inches (15 cm). 5. The diameter of the ball is around 2.76 inches (7 cm). Specification: Material:plastic Color:as picture Package include: 1*jumping ball Notes: 1. Due to various factors such as monitor brightness and light brightness, the actual color of the product may be slightly different from the picture displayed on the website. 2. Please allow for slight manual measurement bias in the data. Safe Material: Designed with soft and quality PP materials, this skip ball for kids causes no harm, ideal for kindergarten-age kids Building Strength: Swinging feet during play enhances flexibility and boosts agility through continuous jumping actions, ensuring effective exercise of leg muscles for improved physical development Improves Flexibility: By engaging in continuous jumping actions, your child's leg muscles are effectively exercised, which lays the foundation for healthy growth while boosting agility Versatile In Use: Lightweight and easy-to-carry design allows children to enjoy this skip ball at home, school, or outdoors, ideal for various activities and settings Encourages Healthy Movement: This engaging activity promotes coordination, balance, and motor skills, helping kids stay active and energized. It’s a fantastic way to make fitness feel like playtime