These rash guards DO run small, and are a bit short as far as arm and torso length (I'm 5'4", and about 128 pounds and the arm length isn't long enough for me) but the snug fit IS great if you are a competitive swimmer who needs a rash guard with NO drag and doesn't chafe in the process. These particular rash guards are really designed to be form-fitting to create less drag in the water for swimmers and athletes. They DO make rash guards with a lot more "room", and the way to tell is by looking at the product picture. If it hugs the torso in the product picture, it's designed to be skin tight like a bathing suit, not like a shirt. I hope that makes sense.

I get a size SMALL in these (usually wear an 8-12 in clothes) and it fits just about right for me. It's comfortable, but tight enough that it creates very little drag when I swim. I swim in the hot Florida sun, two miles a day, 365 days a year, so I desperately needed something to help keep the sun off my skin.

Because of the short arms and the fact that the rash guard will sometimes not cover the small of my back, I tried other brands (Dakine was the latest) to get a little more coverage. It was a mistake- I got horrible burns and irritations at the seams. Body Glove's products are built really well in that regard- even though I wear my rash guard skin tight, the seams NEVER irritate my skin.

I'm not a total believer that the rash guard presents as much UV protection as it claims- I still get a pretty good tan when I wear mine every single day. But I think anything is a help.

It's also nice and light, very easy to wash/rinse by hand and drip dry, and easy to tote around and pack. It's a nice soft material.

It's not the best rash guard I've ever worn (I had one from Rip Curl that was a better fit, better at UV, but I can't find that particular model anymore :() but it's very high up there. I recommend it for swimmers needing some extra UV protection without chafing and drag.