Performance crew sock with Peloton logo. Small: Women's Shoe Size: 4 - 6.5 Medium: Women's Shoe Size: 7 - 9.5 / Men's Shoe Size: 6 - 8.5 Large: Women's Shoe Size: 10 - 13 / Men's Shoe Size: 9 - 12 Made For: Bike, Tread, Bootcamp, Row, Strength, Yoga, Everyday 97% Nylon, 3% Elastane Machine wash cold with similar colors. Tumble dry low Imported