Foldable design, built-in elastic force drawstring. The ankle skip ball is suitable indoors or outdoors, such as park, home, yard, school playground ,etc. We use quality PVC & PP materials that are eco-friendly and are designed to reduce noise and avoid damage to floors during play. The ankle ring is covered with sponge, comfort and safety, without hurting the ankle, you can enjoy fun jumping ball. Using the power of Electromagnetic Induction every time you skip it, the rotating wheel automatically produces a dazzling multi-color light show. ( NO battery or charging needed). This sports swing ball will help make sure your child stays active and healthy. Providing your child with hours of active, indoor and outdoor entertainment. Burn off excess energy and promote physical fitness. You can take jumping ball to participate in sports games, dance with music, it can not only bring you health, but also bring you happiness. Recommended age: 5 years old and above.