Features: This flash jump ring will flash automatically, no battery needed.Made of high-quality PVC and PP materials, eco and durable, safe to the floor.You can take it to participate in sports competitions and dance to the music, which is very fun.Adults and children can use it, perfect for exercise and make you healthy.Specifications: Name: Flashing Jumping RingAdvantages: the wheel will be automatically flashing, without battery chargingSize: total length about 62cm/24.41inMaterial: PVC+PPPacking List:Flashing Jumping Ring 1Notes:Due to manual measurement, there may be some tolerance in the size of the product.Due to difference of lighting and photography, some color difference may be triggered.