Review on Active Bodtek Boys Thermal Underwear Set 👕 - Boys' Clothing for Optimal Comfort and Performance by Anthony Grover

I like this item but the seller should clearly state what is small, medium, large etc. I bought size L for my son who is 10 years old, 75lbs, 4'5 and thought he might be a bit big to fit. The size on the product when I received it said 9-10. Why couldn't they put it on the side so I know what "big" means. I would buy Xlarge. Luckily it's thin to fit into a shirt, haven't tried pants yet.