My son is 11 years old, skinny and short. According to the size chart it is medium. He then says to rate when in doubt. So I grew up. It just fits. So XL would be better. Hope this helps other people.
ο»Ώ
Boys' Fleece Crew-Neck Sweatshirts by Amazon Essentials
41 Review
Catalonia Boys' Oversized Sweatshirt: The Ultimate Comfortable Pullover
44 Review
HILEELANG Boy Girl Polar Fleece Jacket: Warm Hoodie Sweatshirt for Little Kids & Toddlers - Full-Zip Outerwear Coat
45 Review
Parent's Pick: HZXVic Dinosaur Sweatshirt Pullover π¦ Black 6T - Trendy Boys' Fashion Hoodie & Sweatshirt
37 Review
π Fruit of the Loom 6 Pair Cushion Ankle Boys' Clothing: Comfy and Stylish Selection for Active Boys
57 Review
π₯ Stay Warm and Active with Rocky Fleece Thermal Underwear Bottoms for Boys
44 Review
Funny Guy Mugs Tearaway Sweatpants: Playful Boys' Clothing for Fun and Active Days
49 Review
π Boys' Outdoor Climbing Convertible Trousers - Waterproof | Clothing
47 Review