Most of the time, I wear a sleeveless rash guard to protect my face. It’s really nice to make the most of the summer sun’s rays and be out and about in the sun without sunscreen all day long.
The reason why most people wear sleeveless clothes is that they are more comfortable, and they are therefore more comfortable when it’s summer.
While the rash guard is very comfortable to wear, I do think its also a bit of a crutch. Just because you have a sleeveless sleeve doesn’t mean you are wearing the correct size. If you wear a sleeve that is too small, then the entire sleeve will be too small and you will end up with wrinkles. The same goes for a sleeveless shirt. If you have a sleeveless shirt, then your sleeves will be too big.