Fitted our son well who is a lifegauard at a Boy Scout summer camp. Good protection.

"Guard" starts to peel off after a few washings.  I wear an XL and this brand is uncomfortably tight compared to other XLs from other brands.

If you're an outdoor lifeguard, and allowed to wear a rashguard, I highly recommend it.  After a couple of weeks working outdoors, you get lazy about the sunscreen, especially hard to reach places like your back and a rashguard sure saves on time and sunscreen.  You don't have to keep taking your shirt on and off to hop in the water this way either.  This rashguard is like the others, really tight fit (which I think is unneccesary) especially in the arms, I can't wear them longer than 5-6 hours because of the constriction, but the thing about the Clubswim version is that it's 1) MUCH less expensive than the others but 2) the lettering is done cheaply, it starts peeling off after a couple of shifts.  So, it's up to you, spend twice as much, and you don't end up being a "G ar " like mine says I am now, or save the money, get twice as many, and expect to lose part of the guard logo after just a couple of washings (even on cold water delicate and flat drying as instructed).