Wool JQ Crew An essential for fall and winter, this sock is Jacquard-knit, providing excellent stretch and comfort. The high wool content keeps them warm without bulk, making them versatile for pairing with both sneakers and leather shoes. Construction : Jaquard Knitting Composition : 33% Wool 32% Nylon 26% Acrylic 8% Polyester 1% Spandex. COO : Made in Japan Size guide : Size Medium : Length 11.5" and fit best for 25-28cm feet, approximately US Men's size 7-10 Size Large : Length 12.6" and fit best for 27-30cm feet, approximately US Men's size 9-12