A thumb sleeve is designed to absorb sweat and thus reduce friction on the screen to help you max out performance when playing Fortnite and other mobile games. The sleeves, which can go on your thumbs or forefingers, are woven from nylon, spandex, and conductive silver fibers — meaning they'll work with most mobile devices.

A thumb sleeve for gaming also helps to absorb sweat while allowing your fingers to breathe, keeping them relatively cool and dry. They're pretty thin at 0.8mm (and hand washable), so they should still give you some sense of touch.

so the Gaming Finger Sleeve could be genuinely useful for some folks, silly as it seems. It could also be a big help in particularly hot or humid environments. In any case, it will certainly mark you as a very, very serious mobile gamer.

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