About this item PVC ✅【Durable and Safety Material】 Ushma kids punching bag is made with thicker PVC material, and free phthalate free, compliant with CA Prop 65, ATSM, safety standards. The inflatable punching bag is very safety for kids. Just Try it,Your kids deserve it! ✅【Bottom Fill is Alternative】 The punching bag for kids can be filled with sand or water for stability; Sand has proven to be more effective for larger children. Whatever you fill water or sand into the bop bag, then the weight we suggest do not less than 3kg. ✅【Fast Inflate and Deflate】 Double lock valves design make the toddler punching bag can be inflated full within 2 minutes by air pump, and deflated within one minutes just open the full valve. ✅【Multifunction】 This fun and cute dinosaur punching bag is great for both keeping fit or for using as a stress buster, Kids Energy Relief, punching bag bounce back. ✅【No Risk Purchase】Fast Shipment by Amazon; We will refund for this product for any reason you have a problem with these bop bags, just contact us.