Review on DEVOPS Cool Chain Workout Sleeveless Medium Boys' Clothing: Ultimate Performance for Active Boys by Jeremy Black

Although the description says they run large, I wasn't expecting such a length. Size 10 - loose 10, it's soft and comfortable. It doesn't have "flat seams to prevent chafing" and that was the main reason I bought it. The seams are zippered but they are not flat. I hope the large size keeps the seams from irritating my son's sides while swimming. Hope the UV protection works too.