“I kind of feel sympathy for the players and especially the goalkeepers that have to get used to a new ball,” Goff says. So far the Telstar 18 has received criticism from a few goalkeepers that played with it starting in November, unhappy with how it moves in the air and the way the surface feels. Goalkeepers, unlike every other player on the pitch, have to predict where the ball will go in order to block it, while also not having the freedom to run around the field to adjust as the ball flies. That means goalies often have the most complaints about a new design. “Every time there’s a World Cup and a new ball the goalkeepers complain, because they’ve been given a new ball,” says Goff.
On the other hand, replicas (sometimes called training balls or gliders) are designed to be just like the official match balls but are much cheaper. Their panels are often stitched rather than thermally-bonded and are made of a different material. However, they’re not necessarily less durable than official match balls. So, they’re the recommended option for most players. https://www.youtube.com/watch?v=j2Xn84L3Kcs