How do you protect yourself in sports?

[Jurassic Referee]

Wristbands catch sweat. They don't protect you from injury or support an already-happened injury. What you're looking for is a wrist brace or wrist support of some kind.

Welcome to the forum. You are aware that this is a basketball referees' forum and not a players' forum, aren't you? You may be asking your questions in the wrong place.

PS- if you are gonna buy wristbands, spend a little more and get the NY Yankees' ones. They're much better.