Description: 1. Parent-child sports,stick to the goal ball, the product is soft and will not hurt the child. 2. Self-exercise training ball,throw it on the wall,and wait for it to fall slowly. 3. It can be squeezed, and the soft feel is particularly comfortable. Relieve stress and hand flexibility. Specifications: Size: about 4.5cm/1.77in Material: eco-friendly TPR soft, safe Color: Luminous transparent, luminous blue, luminous green, luminous orange Package Included: 1x Stress Relief Balls