O'Neill Men’s Basic Skins Long Sleeve Sun Shirt, UPF 50+ Sun and Rash Protection for Surfing and All Outdoor Activities

This is my second O'Neill rashguard/swim shirt and it is top quality (one is short sleeve, and now this LS). There is a lot of variance in customer comments about fit and effectiveness, so here is my experience. I typically wear a size Large or sometimes XL depending on the brand/cut. SIZE/FIT: A Carhart cotton t-shirt size Large fits me loosely, while a Riggs t-shirt size Large is snug but still fits. I bought this O'Neill rash guard shirt as a 2XL hoping it would fit a bit loose and it does. A Large for me in the O'Neill would be tight and form fitting, not quite a compression fit. An XL would be better for a snug fit for swimming laps, etc. But I like the looser fit of the 2XL as a beach shirt that also works fine for casual swimming. So I would think you probably want to buy one size larger than your normal t-shirt size for the same type of fit. Buy your regular size for a near-compression fit. And buy two sizes larger for a loose fit. EFFECTIVENESS: I've worn this O'Neill shirt swimming in a pool for three hours in mid-day summer sun (95 degree F) with zero burning and hardly even any additional tan. I am fair skinned with freckles so sensitive to sunburn. On my face I liberally coated with SPF 50 sunscreen and it got very tanned, almost but not quite red. BUT, underneath the O'Neill shirt I was totally protected, much better than the SPF 50 sunscreen. Our grandkids wear O'Neill rashguard shirts at the ocean beach and play all afternoon without sunburn on shoulders or backs. These are also great for swimming or beach strolling when the temperature dips and the wind picks up and provide a little more warmth than just bare skin. QUALITY: These have lasted for a long time for our grandkids. Since they stretch a lot they have worn the same ones for three years while still growing, in both chlorine pools and ocean saltwater. The seams are well sewn and non-irritating, though not totally flat. It is a very tight weave and I've never seen them get snagged or torn at the beach or pool. It has a slick texture. I'm sure every brand has a small percentage of errors that slip through, but the six or so that we have bought have all been top quality in materials and construction.

Great fit. M 5’6” 160

I love this shirt. Normally I wear large shirts but prefer XL for comfort and less form fitting around my waist. I was going to a water park and wanted sun protection and a loose sun shirt for comfort and looks. I ordered the Black XL [I'm 5'9", 184 lbs, 43 chest] and it arrived same day. The package was small and light but I found the shirt to be durable and well made with strong fabric. I love the O'niell logo too. This shirt kept me cool as the water evaporated, acting like a wick, drawing away the 90+ degree day heat. It is long-sleeve. I would say this, with those temps, as long as you stay wet you're great. If not, it can hold your body heat and certainly make you heat up. Other than that, I looked good in it, my love handles were hidden and I walked around with confidence at the water park! NO SUN BURN !!! Work perfectly and I didn't have to put lotion all over my body and worry about re-applying all the time. This shirt provided total sun protection!

I bought this just before my Hawaii trip. Initially I had one more SPF and rash-guard vest which was too tight, whereas this product fit me just right, a tad short on the sleeves but it's ok. I used it for snorkelling, swimming and continue to use it for swimming in Nor-cal. Happy with this product so far. It seems to be helping against the sun, which was my primary purpose for buying it.

Perfect

Bought this shirt for a recent vacation in Florida and worked out great. Comfortable in the water ,but not hot while walking on beach in 96-100 degree sunshine. Most important, the sun did not penetrate the 50 SPF material. Bought my usual men’s size medium and fit was not too loose, not too tight.

Good quality - lasts and looks good on my son.

I wore this swim shirt in the Sierras during 90+ degree weather for a week straight. Fishing, swimming, and hiking every day. It was comfortable and easy to move in. I swam every day and the shirt dries very quickly in the sun. Not a hint of sunburn, even when wet. I'm 5'10, 165lbs, and the medium was a perfect fit (snug/skin tight). The shirt still looks new after a week of daily use. I ended up washing/drying in the machine, and it didn't fall apart. I have high hopes that it will last a few seasons at least.

Great quality.

So I picked up three of these and I wasn't sure what to expect. Well, you can immediately feel the sunblock working (wore them in the Dominican Republic 🇩🇴) when I put them on. I needed some protection from the sun at times and these worked very well. I felt extremely comfortable walking around the beach -- did not make me hot or sweat since it kinda keeps you cool. Then into the water and surprisingly, wearing them out of the water was nice too. They dried quickly while adding to the cooling effect. Although they are not specifically designed for swimming, I found them perfect for it. Rash guards are better for swimming yes, but not for just walking around -- a little too tight. All in all, I used all three and will continue to use them each time we go down to the beach.

Ordered M size fit perfectly

Excellent for the water, but also as an undershirt for golf

Wear this to Cuba and some of the excursion trips, including one where I spent the whole day on a catamaran, and some time in the water and some time on the beach. It helped a lot in terms of keeping the heap and sun burn away. Looks cool as well. This one is not the super close fitting type, it gives a fair amount of space between your body and the clothes to make it comfortable, but it does feel tighter when it's all wet.