I have an L for my average size 9.5. He randomly commented twice that they were the most comfortable socks he'd ever worn. Admittedly I'm not very good at updating his socks BUT that seems like a good endorsement!
12-Pack of Jefferies Seamless Sport Socks for Boys
45 Review
π± Marine Casual Catspads for Boys' Clothing - FALKE (Size 13-16)
44 Review
Ultimate Durability: Carhartt Boys Camp Crew Sock 6 Pair Pack
45 Review
Pack of 6 Seamless-Toe Quarter 𧦠Athletic Socks for Big Boys by Jefferies Socks
62 Review
Boys' Adidas Active Sports Tricot Athletic Clothing
45 Review
Arctix Youth Pants Reinforced: Large Boys' Clothing for Active Adventures
46 Review
Waterproof Cozy-Dry Rain/Snow Pants for π§ Kids by JAN & JUL, with Fleece Lining
64 Review
π Fruit of the Loom 6 Pair Cushion Ankle Boys' Clothing: Comfy and Stylish Selection for Active Boys
57 Review