What I read in the reviews led me to think that the large would be the same size as about a 12 for boys. That's definitely not true! I have a large size, it is very short and wide. This is more for my 4 year old than my 12 year old.
Van Heusen Sleeve Dress Poplin
42 Review
Star Wars, Marvel, and Disney Short-Sleeve T-Shirts for Boys from Amazon Essentials
50 Review
Soft Brushed Fleece Crewneck Sweatshirt for 👕 Boys and Girls 4-12 Years - Kid Nation Kids
42 Review
The Good Day Lab Clean Shield: Ultimate Comfort and Breathability in Tagless 4-Way Stretch Polo
43 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
👖 Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
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Waterproof Cozy-Dry Rain/Snow Pants for 💧 Kids by JAN & JUL, with Fleece Lining
64 Review