Look no further for that subtly rugged sock that pairs perfectly with your Birks and boots. Knit with soft recycled yarns and plenty of stretch for all day comfort and coziness. Fit: Fit Medium: Women's (US) 6-10 / Men's (US) 4-8. Fit Large: Women's (US) 10.5-15 / Men's (US) 8.5-13 Detail: A great sock for Birkenstocks and boots alike! Material: 67% Recycled Cotton,18% Recycled Polyester, 9% Nylon, 3% Spandex, 3% Other Care: Machine wash, Tumble Dry, No bleach  UAH2301-BKM