Superior quality material Made of environmentally friendly plastic material. in high quality PVC and thickened ponge. strong and durable. light and odorless. A thickened sponge can protect your ankle by reducing friction. soft and secure. Foldable design Integrated elastic drawstring and foldable design. which can reduce the size of the flashing ball by 1/3. easy to store and transport. Flashing light The jump ring has a built-in color flash (no battery or charging required). When the phalanx bounces the ball. the flash turns on automatically. which is very noticeable. Easy to use Put your foot in the circle first. then rotate it forward or backward as the rotating bar under the foot moves. Lift the other foot. The two feet work together. almost like a skipping rope. Long term practice will encourage coordinated development and increase flexibility. Best Gift Thanks to the improved buckle design. this flashing ball is not only suitable for children. but also to amateurs of different ages. You can use it indoors or outdoors. eg. B. in parks. houses. Classes. school playgrounds. etc.