Hot Headz Polarex Fleece Socks 96% Polyester 4% Spandex Imported Mens Size Small - Up to 8.5 Medium 9-10.5 Large 11-12 X-Large 12.5+ Wear with any type shoe Extreme Warmth, Cozy Comfort Wicks moisture away from feet Ladies Size Small Up to 9 Medium 9.5-11.5 Large 12+ Men's Size Small - Up to 8.5 Medium 9-10.5 Large 11-12 X-Large 12.5+