By no means is this type of ball similar to a typical soccer ball. For starters, instead of air, its bladder is filled with foam. In this case, the ball has less bounce and is heavier in order to facilitate its purpose; meant to be used on a hard surface indoors. This size 4 ball may also have suede castings which help to stabilize the ball on a slippery floor.
This is the best ball ever made for dogs, especially large dogs who can usually rip a ball apart in a matter of minutes, like mine. This is our second one, the first one we had for over 2 years and my pit bull put so many teeth marks in this ball and it never went flat. The pump end eventually fell out and it still stayed round and would bounce. We only had to buy another one because my crazy dog liked to throw it up in the air and it went over the back fence and another dog (or kid) decided to take it home. I also like that I buy one for my dog, and a kid somewhere gets one too. I will never own another brand of ball for my dogs.
Latex bladders are used in high-quality balls. These kind of bladders are soft and provide good feeling. They offer better response and bounce than Butyl bladders, but the downside of this kind of bladder is they don’t hold the air for too long. As a result, they require filling more frequently. Air escapes due to micropores on the cover, but nowadays some balls are constructed with carbon latex bladder to help to close these micropores. As a result, the balls can hold air for a longer period.
Soccer balls have several panels that influence their flight characteristics and the amount of control a player can have while playing. International soccer competitions use a 32-panel ball. Major leagues use an 18-panel ball and indoor leagues use a 6-panel ball. High-end soccer balls have hand-stitched panels with a synthetic thread. A low-cost one for practice and training will usually have its panels glued together.
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