This is purely a matter of personal preference. Long-sleeved rashguards are better suited for colder temperatures, while short-sleeved rashguards are more suitable for summer or warm weather. In competitions, short-sleeved rashguards are also better because they leave the forearms free, which can be an advantage, especially when grappling. Long-sleeved rashguards, on the other hand, also cover the elbows, so there is less friction and skin injuries. Many of our rash guards come in designs to match fight shorts, allowing you to coordinate your entire outfit.