Product information: Pattern: solid color Fabric name: polyester cotton Applicable scenarios: Running Color: ankle socks pure black, ankle socks black background white dots, ankle socks pure skin color, ankle socks black dot on white background, ankle socks skin background white dots, ankle socks black background yellow dots Sock length: mid-calf Main fabric composition: Cotton Size: L/XL,S/M Applicable gender: neutral/both men and women Applicable age group: Youth (18-40 years old) Function: non-slip Suitable season: Four Seasons Universal Style: Sports