TOP QUALITY: This kids inflatable punching bag is made of 0.25mm thickened PVC, which is durable and wear resistant. Also, the diameter of the bottom base is 50cm/20inch, so the bottom of this punching bag is wider than other similar products. The bottom surface has a larger contact area with the ground, which means it would be more stable to stand on the ground. The weighted base can be filled with water to make it bounce. .2-IN-1 AIR VALVE: This kids punching bag uses an upgraded 2-in-1 air valve. Use your own pump with an appropriately sized nozzle to inflate air to the top of the air valve. And open the lower part of the air valve for quick deflation for storage. Standing at a height of 120cm when fully inflated, this punching bag is perfect for children and toddlers aged 3and, girls and boys. .UNSUSPENDED HEAVY BAG: Can be used indoors and outdoors. It has two chambers, the lower chamber is for water to increase the weight to keep it stable on the ground, the upper chamber is for inflating air to help you train your skills. Add water into the base first, then inflate the kicking body, otherwise it can't rebound effectively. Note: It is recommended to inflate 1-2 times a week. .KEEP SCREEN TIME TO A MINIMUM: This punching bag for kids keeps your younger and older kids away from screens and physical activity. This is the best way for hyperactive children to burn off the energy accumulated by sitting too long. Also, after work or on vacation, it's a good choice for you to work with your family and have a good time with your child. .IDEAL GIFT FOR CHILDREN AND TEENS: Practice mixed martial arts - Taekwondo, punch, drop kick, Muay Thai, grappling and karat as you please. Comes with a repair patch: in case of a hole or leak from a puncture or an accidental crack, you can repair it yourself. You can also contact us to request a replacement. .