I purchased the soccer ball for my son as a gift. It came deflated so we filled it with air before boxing it. Upon opening it, it was deflated. It only held air for a few hours. I contacted the company and they immediately shipped out a new one without hassle that is holding air just fine. (I was very pleased with how prompt and pleasant they were!) It lights up very bright when hit or bounced and turns off on its own after a little while of not being hit or bounced. My kids all love it and play with it nightly. It is not stitched as a real soccer ball is, but is more of a heat fused soft plastic. It holds up just fine though to my 13 year old soccer player's kicks. We are all enjoying playing with it and happy with our purchase.
It depends on its intended use. Soccer ball casings are made from three kinds of synthetic materials. Polyvinyl carbonate (PVC) which is what most less expensive training balls are made from, Polyurethane (PU) which is the preferred ball for soccer tournaments, and a combination of the two. There are also foam and rubber training soccer balls for kids. Some kids' soccer balls are made of 100 percent thermoplastic polyurethane (TPU), which is a kind of foamy casing material so the ball is very soft. There are greater and lesser grades of each kind of material. PU-covered balls are generally softer, livelier, and have a better feel to them, and are what most people seek when looking for a optimal performing soccer ball.
Match balls are constructed specifically for competition and the sport's high-level training. These balls feature higher quality materials and must conform to regulation standards of your league. Training and recreational soccer balls are designed to handle extended use on a variety of playing surfaces, often featuring a PVA casing for enhanced durability.
Size 5 is the official size for professional matches. Therefore, this ball is only available in this size. Do not use this soccer ball on concreted areas. Its unique rubber uses Puma Airlock Valve Technology (PAL) in order to facilitate proper airlock technology. This ball features Perimeter Balance Technology (PBT) which enables it to maintain impressive flight characteristics. https://www.youtube.com/watch?v=j2Xn84L3Kcs