At the World Cup level, these tiny changes in a ball’s aerodynamics can legitimately impact a team’s performance, so the intense scrutiny of the World Cup ball is perhaps to be expected. “You could argue that it’s the most important piece of equipment in the most popular sport in the world,” says John Eric Goff, Professor of Physics at University of Lynchburg.
However, in Goff’s wind tests, he and his team noticed that the Telstar 18 had a little more resistance at high speeds, and predict that the ball will go about eight to nine percent less distance down the pitch on long kicks. This means that Manuel Neuer, the goalkeeper for Germany who was considered to be the x-factor that brought Germany the win in 2014, might not have quite as much of an impact clearing balls from the goal this time around Goff says. “You’d see him just kicking the ball way, way down the pitch, and [this World Cup] you might notice that some of those kicks aren’t quite as long as before,” Goff says.
A: The type of equipment that your child may need to play soccer in addition to a properly sized soccer ball will vary by organization. However, items such as shin guards, cleats and mouthpieces would be very practical for protective reasons. Soccer can be a vigorous sport, but with our helpful ball recommendations and proper sporting gear, your kid can have a safe playing experience.
We have gathered a list of soccer balls that all fall within the mini to youth categories from across the web. These balls are the perfect size for your little one, whether they are just learning how to kick or about to start their first year on their middle school soccer team. We hope that one of our Top 10 Best Soccer Balls for Kids will be the right size…and style for your child.
2010 Jabulani Adidas This ball has 8 panels. A special variant was used for the final match, the gold Jo'bulani (picture on the left), which was named after "Jo'burg", a standard South African nickname for Johannesburg, site of the final game. The ball was notable for the controversy it attracted, with players and fans contending that its aerodynamics were unusually unpredictable. 
These soccer balls are exact replicas of the finale game balls, right on down to the specific design details that can be found on the ball. If you’re looking for a durable, reliable ball that can help players replicated the feeling of playing the game at home, then the Top Training Series by Adidas is one of the best options to consider today. Each ball is guaranteed to pass FIFA tests for weight, circumference, rebound, and water absorption. It is the closest you can get in the entry-level categories for a soccer ball to the match ball experience.
The highest in cost, top match balls for elite soccer players are constructed with a supreme quality cover, backing, and bladder for the most predictable flight pattern and striking ability. Some of the most impressive official match balls on the field are made with the threadless, seamless, beveled edge (TSBE) technology which provides a seamless surface for touch and less water uptake to stay in control. adidas soccer balls that pass a demanding series of tests, set by FIFA, on the shape, weight, performance, rebound and water absorption have the highest ranking a soccer ball can get. Most adidas training and pro match balls are FIFA approved so you can lead the charge down the pitch.