S = US Shoe Size 9-11.5, M = 12-2.5, L = 3-6 Sock Height: Crew Designed to fit perfectly in kids' shoes without additional bulk Sizing clearly indicated on the sock Flat knit toe seam for additional comfort Elasticized arch brace for secure fit Made in USA of Imported Yarns: 58% Merino Wool, 39% Nylon, 3% Elastane
Fit to US shoe size: S = 9-11.5, M = 12-2.5, L = 3-6