Pull On closure ??mported. Blend of 75% Cotton, 15% Polyester and 10% Spendex. ? GREAT GIFT IDEA:Pack of 6 colorful socks.Super cool choice for you,your son,your girls.They will loves these socks.It’s great for running,cycling,basketball,volleyball,football and many other sports. ? PERFECT SPORT SOCKS:Needed some athtic socks for his practices! The H&B Athtic Socks has proved to be very soft but supportive for his feet.Holds shape and doesn’t sag after hard practices. ? MOISTURE WICKING TECHNOLOGY:Great for walker’s and runners’ who feet sweat,Dri-Fit fabric moves sweat away from your skin,keep your feet dry and comfortable. ? SIZING GUIDE:Large = US Shoes Size,Men’s 6.5-10 and Women’s 8-12 As these sport compression socks are dri fit socks,so the size is a little tight,it is normal.