I would buy larger sizes on these type of clothes. They are too tight

I bought size 9/10, but it fits 4/5 only.

This is great for playing in the ocean - surfing - boogie boarding - body surfing - It saves your belly and skin from getting cut up or scratched from the sand

I love this high quality swim shirt. It fits my son great. I followed the advise and ordered a size or two bigger.  My son is 3.5 years old and only weighs 26 lbs and the 4T fits him well. Will order this product again when he outgrows this one.

This is a great swim shirt.  It runs small, but with a size larger, my boys were comfortable and protected from the sun!

I purchased this to help keep my daughter warm during her swimming lessons & it has done a great job, no more blue lips or shivering! My daughter is 6yrs and is very slender she wears 5/6 size in her everyday clothes, I got her the rash guard in a 7/8 and is just fits w/ no room for growth + very hard to get over her head, I would recommend ordering a couple of sizes larger than you normally would.