YASIDI Men's 98% Cotton, Athletic, Anti-Fungal, Ribbed Crew Socks SHOE SIZE CHART: Sock Size 11-13 fits US shoe size 8.5-10.5 & Europe shoe size: 42-46. Sock Size 12-15 fits US shoe size 10-13 & Europe shoe size: 44-48. EXCEPTIONAL COMFORT FIBER: Manufactured with a high quality 98% Cotton fabric and 2% Spandex for your comfort. MACHINE WASHABLE: For best long lasting results, wash cold with like colors, only non-chlorine bleach when needed. Tumble Dry Low heat. We are confident that the color and fit will look like new for a while, will not fade. Imported. REINFORCED TOES & CUFFES: Our socks were ideally designed to embrace your legs with a perfect fit. ABSORBS MOISTURE EFFICIENTLY: As opposed to most other synthetic material crew socks that trap moisture, our socks were especially made with a perfect blend for athletes & sports players. Cotton Socks have a high absorbents quality while on the go. 100% doctor recommended to prevent fungus infections.