The bladder, or the inside, of the soccer ball, is also very important to talk about.  There are typically only two choices that they are made out of butyl and latex.  The higher-end balls usually are latex while butyl is typically meant for training balls.  However, butyl is much better at keeping the air and shape of the ball for longer periods!   

The most modern feature is an embedded NFC chip, which is found on the top of the ball. If you download a free app on iOS or Android, you can personally interact with the ball's exclusive content and location-specific challenges. You'll also be able to participate and enter competitions and World Cup-related challenges. Of course, you can record and upload your experiences for social media posterity.
Only size 5, and size 4 are available for this. Although this should not be a major problem as this is for recreational play and practicing purpose, so kids are ok to play with this as well. In fact, the ball that will be given away to the developing countries will be used by the kids mostly. If you are buying this for an adult go for size 5, and if you are buying for kids or youth players then better go for size 4.
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.

What sets each soccer ball apart from another is the quality of the materials that are used in its construction. The lining, bladder, cover, and the quality of the overall craftsmanship will all influence the final cost of the soccer ball you’re looking at. Higher quality balls are usually bonded together to provide a superior shape retention experience and offer a truer flight.

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.