Features: Safe & durability ankle jump balls set made from child friendly plastic materials, designed to enhances coordination skills through dynamic rotational movements while ensuring injury without exercise. Features 6 rotating hoops with ergonomic ankle grips that promote rhythmic leg motions, crafted from nontoxic, impacts resistant plastic for indoor/outdoor use. Ideal for school aged children (6+ years) through adults seeking engaging physical activities that combine fitness training with developmental coordination improvement. Perfect for backyard playdates, or homes workout routines requiring compact fitness equipment that transforms cardio exercise into entertaining skill building games. This versatile coordination toy doubles as aerobic fitness gears, challenging users to know circular ankle rotations while developing balance, timing, and full body engagement through repetitive motion sequences. Specifications: Dimension:50.8x13cm/20×5.12in Component:Plastic Package Includes: 6pcs Sport Ankle Hoops note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.