Thumb sleeves help prevent scratches on your screen if you have untrimmed fingernails or, dirty or rough thumbs that can easily scratch your phone screen. Although, not all phones' screen scratches that easily, and not everyone uses phones with corning gorilla glass and the like.

These mobile game finger sleeve sets support almost games on android or ios phones and are also perfectly compatible for shooting games including PUBG, rules of survival, knives out, brawl stars, ingress prime, survivor royale, critical ops, etc. It's made of conductive fiber and spandex material, you can be more comfortable when playing games.