The best rash guard shirt ever!
596524
Finally, a super stylish rash guard shirt.  The design is beautiful, the fit is perfect, and the quality is the highest.  I would wear it even as a regular shirt, it looks so great.
436627
Husband loves this Rashguard-Tee which he says is very comfortable, drys fast and has great protection from the sun. Its not a stiff as a Rashguard style of material, more of a tee, but does the job. Husband has had this for almost 2 years and still looks new, washes great and holds-up very well from the ocean to the pool.
793225
This rash guard is by far my daughter's favorite! So much so that she now owns three of them! It is very good quality and a loose fit style, which is hard to find in a rash guard. It fits more like a juniors tee from Roxy than a typical skin tight rash guard. The material is soft and super stretchy for a comfortable fit. If you are looking for a loose fit rash guard we definitely recommend this one!
3336701
I absolutely love these shirts, I have 4 of them now.

I am a big fan of Columbia's Silver Ridge Long Sleeve Shirts but not the Short Sleeved versions, and have been looking for a SS for a long time and this is it!

The material is great, its water resistant, and sun resistant as well. Not to mention all the extras beside the technology in the fabric. There are loops up the button area for some reason, but I love it. There is a utility loop on the chest which is great for Sunglasses or an ID Badge. The chest pockets have normal Velcro on them but they also open from the sides to reveal 2 extra pockets just to keep you organized better. (4 pockets total).

And there are 2 huge vents on the back, this is amazing ventilation. This is an awesome hiking and outdoor shirt that I highly recommend!

I plan on getting this in almost every color.

PS: For reference I am 5'9" and 175lbs, the Medium fits great, slightly loose. Great with a tank top or t-shirt underneath.
1863791
Rash guard with great SPF. Slightly longer sleeves than a lot of shirts for the water. Tight because its a rash guard and thats how they are made to fit. I bought an xl and it fit me (511; 160) And my friend (54; 190).
1450157
This rashguard fits perfect, looks great while providing outstanding comfort and protection from the sun's rays.  It is great for hiking, swimming without ballooning, and other times when needing to avoid the sun's rays.  I really wearing it.
3044724
Great sun shirt.  I tried a bunch of other rash guards that were more expensive and not any better really, other than maybe looking a little cooler.  Sizing is always tough for me as in most shirts I need between a medium and a large.  this one the medium would have fit me if i wanted a regular tshirt size.  I went with small though because I didn't want any extra sleeve or tail, and it's just right without being tight like for a wetsuit.  It does shrink up a bit in the water, so if i wore it in the water a lot I'd want a medium.  For being outside and dry though it's perfect a size smaller than usual.
1657226
I purchased this shirt for my husband before we took a trip to the Outer Banks where I knew he'd be doing some fishing. This shirt was great! I was a bit concerned that my husband would get too hot while fishing on the beach with the long sleeves but in our mid-80 degree weather, he was completely comfortable. The shirt has a great vent in the back to keep the person wearing it cool. Plenty of pockets to keep necessary items, and the button loops on the sleeves ensure that rolled-up sleeves stay put. The shirt dries very quickly and my husband practically lived in it. The antimicrobial fabric did an awesome job of protecting the shirt from bait and fish stink and washed clean without issue. I would absolutely recommend this product to anyone considering it! Under Armour is a fantastic company and they definitely don't disappoint with this shirt!
1097325
I have worn this rashguard at both at the beach on 80+ degree sunny days, and at the lake while paddleboarding for several hours, and I was surprised to find that I have never felt hot because of wearing this shirt. In fact, once it gets a little wet, it actually keeps me cool. The cooling effect it gives you while the water evaporates from its fabric feels similar to standing in in air conditioned room, especially if there's a breeze..

As for sizing, many of the reviews say to order a size up, but after reading through several reviews I saw that nearly everyone who described themselves as "fit" said that the shirt ran true to size. I like to consider myself a fit 5'8, 160 pounds, so I ordered a medium just like I do in t-shirts, and it fits perfectly. It is absolutely skin tight like its painted on, but that's the point of a rashguard! If I were overweight or had a bit of a gut, I could see going one size up, but if you are in shape it fits true to size.

I bought this shirt purely for the sun protection, because skin cancer is no joke, and it has quickly become my go-to shirt any time I find myself near water. I'll probably be ordering another in a different color.
2149149
Fantastic rash guard, but don't try and remove the tag. It will leave a hole! I sadly learned that out the hard way!
1248678
I've bought rash guards for my son from Quiksilver for a few years now, and he's never been sun burned while wearing one. They fit him great and are made from quality material. These rash guards/surf shirts are expensive but in the long run they are cheaper than sunscreen and they give better coverage for sun protection. I will continue to buy this brand.
2320412
Loving this rash guard!  Im 53 118 lbs and went for the small and think it fits true to size.  I did not size up like people said and am happy with how it fits!
4752235
I love this swimming shirt. It's the only rash guard shirt I've been able to find that's feminine and pretty, and I plan to use it also as a swimsuit cover-up for the suit I have that's a bikini top with a swim skirt. It can be worn longer if you don't pull in the drawstrings. It fits like a regular shirt, not skin tight like most swim shirts. I'm looking forward to wearing it on my vacation.
2772642
Note: I expected it to fit a little large around the middle. I am 5'4", 130lbs, and while the sleeves and neck fit well, the rash guard was a little loose around the midsection and had to be pulled down a bit while swimming.

That said, it's a great product. You notice immediately after putting it on: this is a very comfortable shirt that I would wear on the beach, on a boat, at a water park, even just anytime I expected to be in the sun a lot. Feels cool and smooth and comforting. Stylish too; obviously you're still wearing a rash guard and most people don't, but it looks good.

Best of all, it seems to really block the sun. I bought this item to wear on a trip to a beach vacation in the northeast. We've just had a killer heat wave and there's been a ton of direct sunlight for days, but despite going to the beach for several hours every day for the past week, I haven't tanned a bit. I couldn't be more pleased with this garment and would consider buying more than the 2 I already got. It's so much easier than covering my whole chest and arms and back with sunscreen.
2305981
FINALLY!  Thank YOU Undersummers!  Comfy, wicking, rash guard, well made, well priced. I want to give you a big hug!  I've been waiting for you since I was 6 years old!  (Over 40 years!)
993819
This rash guard shirt with a skin-tight fit is made far better than others I've seen at this price. I was very satisfied with this purchase and will likely buy a second one.
2059872
I can't imagine going on a tropical vacation without a rash guard. After getting sunburned I went scuba diving and was having trouble putting my wet-suit shorty over my sunburn. I put on my rash guard and the wet-suit slid on like magic with no friction and no pain. Then after diving, that SPF 50 shirt dried in about a minute. Again, magic. This is the ideal water sport shirt to prevent blistering