IMPROVE REACTION SPEED: Big water-, water- due to gravity or hit the wall or arc to hit the user to simulate the opponent's forehand and punch attack, a good helper for practicing dodging. PORTABLE: Compact and lightweight, you can practice when it is empty. Just find the filling of and sand, the heavier, heavier and more stable there is. COMFORTABLE FEELING: The water- is much more comfortable than the sandbags, so you don't have to worry about hand injuries, and it can alleviate your negative emotions throughout the day. CHILD-FRIENDLY: A sandbag that promotes children's sports while helping to improve agility and hand-eye coordination. Color: red Material: PVC Size: Diameter: 22cm Package Contents: 2 x heavy bag 2 x injector 2 x hook 2 x sling Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.