Review on Stay Warm and Cozy: Bodtek Boys Thermal Long Underwear Set - Perfect Pajamas or Base Layer Leggings & Shirt for Kids by Robert Gilbert

I like this item but the seller should clearly state what is small, medium, large etc. I bought the L size for my son who is 10 years old and weighs 75lbs 4ft 5in and thought he might be a little big for him to grow into. 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 in a shirt, haven't tried pants yet.