User blog comment:HazelQuill7445/Awesome fan art/@comment-26258854-20180602081605/@comment-26258854-20180603010227

Theres a running gag where Qrow always has his cape on regardless of the occassion, it's usually shown in RWBy Chibi, especially when he's in his swimwear. I think its best to just accept it and not question how it stays on.