Warm Tips: 1. Do not over-inflate the grass balls or inflate it under high pressure. Immediately fill the air valve with a provided plug when you inflate it to 90%. 2. It’s normal that inflatables grass balls are likely to Air leakage slowly. Please deflate the product, fold it up and place it flat in a place free from friction or sharp objects if it won’t be used for a long time. 3. This grass balls can be rinsed by water if it is stained. 4.Deflation: Open and squeeze the air valve to deflate the air inside slowly and naturally or insert a slim object to keep the air valve opened. Be careful to not penetrate the ball to forcibly deflate the air. After that, fold up the grass balls carefully. 5. It can bear no more than 100kg. 6. Please press the air valve down after inflation to avoid leakage during bumping.