My son is 9 years old and I have read everything in the comments about gaining height. I bought size 12 and it fits perfectly! This is good stuff.

As a mother, there's no way I want my children to have the same memories I have of scorching badly in the sun every summer. This swim shirt takes my son's worries away when he's playing on the beach in the sun and taking his pills.

Perfect fit for the price. It doesn't have to be a loose shirt, so expect it to be snug fitting. Great for the little surfer. Holds up well in chlorine. Haven't tested it in salt water yet.

Excellent shirt. Works little. I bought for a 3 year old and another brand from Amazon. This one definitely works less than the other brand. I bought an XS 6T for a 3 year old and I'm glad I didn't buy less! Rashguards are meant to be snug, but if they're smaller, they'll be difficult to put on and take off!

I bought two of these for my boys and they wore them to the beach all day. They protected their skin as they needed it. The material is just the right thickness. The sleeves were a bit long, but that's not critical. Actually worked for my 11 year old who has long arms. 6 years didn't even attract attention because they didn't hang or anything. 11 years old, small for his age and thin, he fits a size. 12 med. 6 yr old is pretty average and he was wearing a size 8 XS. Both were a perfect match. I

I have had great luck with TSLA branded products here at Revain. Everything is thick, including this shirt and the last pair of jogging shorts I bought. This rashguard is breathable and dries quickly. This is a great length for my 6.5 year old who is above average. The reason for 4 stars is because the sleeves are very tight and the head hole is also very small and tight. Now that it's on, it's good to stay in place and keep the sand/sun out. But my son has a huge head (he has hydrocephalus so…