Voit goes a way back since its foundation in 1922 in providing the best soccer balls to all soccer fans and professional players. By the end of the 1920, the company introduced the first fully molded rubber soccer ball. They also came with the needle like air retention valves. They later invented a technology that allowed the balls to be machine wound with sturdy nylon threads over the rubber bladder. This ensured that the soccer balls would be stronger and more consistent. It also made balls cheaper and more available since they can be produced in mass production.
How Do I inflate my soccer balls? Soccer balls lose air pressure over time. Sometimes over a few days (soccer balls that use butyl bladders keep air pressure longer than balls that use latex bladders). Be sure to check the pressure frequently to make sure the ball is properly inflated. Therefore, invest in a good ball pump, have a supply of inflation needles and use a low pressure gauge to measure for proper inflation.
I bought three and used them for juggling, shooting practice and kicking against a wall. I juggled 90,000 times in 3 months, and shot many times on goal and kicked against walls. These are very durable. I look for durability in practice balls and these are superb. I wonder if Wilson has the newer cover pattern with the same internal structure in any model of ball. It would be wise to do that for the sake of staying current. I love the feel when kicking. Variable amounts of air can be used based on personal preference while practicing. A little less air allows a more forgiving bounce while juggling.
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