While the ball features high-quality materials, the focus with this ball is all the smart features and less about the physical make-up of the ball, which doesn’t come in handy when you’re researching! What I did find with this ball is that it’s match quality and built to last. It’s also available in sizes 4 or 5 for multiple ages and training levels.
Why do some soccer balls get bigger over time?  Many soccer balls do tend to get larger over time. Especially lower quality balls! This is due to the pressure of the bladder against the linings and cover.  Over time the material and stitching may stretch out causing the ball to become larger. Also, soccer ball abuse may cause the stitching to loosen and the ball to expand.
The game of soccer has evolved greatly over the years and the ball has evolved with it.  In days past, defenses played with as many as six men back.  Then things changed around the 1950s to allow when many teams played four forwards at one time!  Now, we are in a period where we see (sometimes) one natural forward in a team.  The changes that have happened in the game have oftentimes been a result of the changes to the soccer ball itself.  Through its many changes, it has allowed teams to change strategies.
This is exactly the niche that American Challenge’s Brasilia soccer ball is supposed to fill. With a combination of materials that offer a range of different qualities, the Brasilia is able to transition seamlessly from dirt and turf to an indoor court or even on the street. This begins with a casing that is made of TPU. This provides the requisite durability needed while still offering some responsiveness. On top of that, the glossy finish actually benefits this ball in these settings rather hindering it.

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
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