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Whether playing basketball or swimming in
zhe wild ,external and interal may lead to body
injury. This product is special designed for out-
-door enthusiasts. If you pull up the end. It will
be aproctective arm guard. And there is a mini
pump and compass on the front end. When your
arms get the fiacture,turn on the pump the air-
-bag around arms get air inflation. Then the arms
get fixed to avoid more more serious injury.