SockTower Men's Unisex Sports Athletic Cushion Crew Team Field Baseball Softball Cotton Terry Plain Knee High Socks Sock S=Men Shoe Size=4-6/ Women=3-6. Best to fit Foot= 7" to 9". FOOT LENGTH: Before Stretch= 6.5. After=8.5. CALF LENGTH: Before Stretch= 12.5. After=15.5 (try on model foot =8.5). Sock L=Men Shoe Size=6-12/ Women= 6-13. Best to fit Foot= 9" to 11". FOOT LENGTH: Before Stretch= 7.5. After=11. CALF: Before Stretch= 14. After=18 (try on model foot =11). Elastic Arch & Ankle Support; Double Terry Cushioned sole, toe and heel. Soft comfortable, absorption, 82% Cotton, 3% Rubber, 7% Nylon, 8% Spandex NON-TOXIC & ODORLESS MATERIAL. Fasten texture- Professional long-term use Quality, SIZE L= 3.5 oz= 99 g. SIZE S= 3 oz= 85 g. USA Tax payer; Item located and ships from USA. Import/Made in Taiwan (manufacturer direct; premium standard of quality control)