Soccer ball covers are meant to protect the construction of a ball, and make it more durable and long lasting. Manufacturers use two types of materials, mainly polyurethane (PU) or polyvinyl carbonate (PVC). PVC is the cheaper and much affordable variant, but it is more durable than PU. It has scuff-resistance, which makes it perfect for training soccer balls. PU is used for match balls, since it is softer than a PVC soccer ball and tends to respond better to contact.
Well, panels are not any different component. Panels are the segments or octagon quilt that are seen outside the balls. Of course, nowadays you will find some other shapes besides octagon. FIFA official balls usually contain 32 panels. But nowadays you will also find 26, 18, 14, 8 or even 6 panels with different shapes and designs from those of conventional balls.
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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