Thermal Socks By: Heat Holders Fits shoe size: Women's:  5 - 9 Men's:  4 - 8 Over 7x warmer than a basic cotton sock Long loop pile for maximum warmth , thickness and comfort Thermal yarn provides performance insulation with superior moisture breathing abilities and softness Brushing process maximizes the amount of warm air held inside each sock for unbeatable warmth all day TOG 2.34 Color:  PURPLE THESE ARE PURPLE NOT BLACK