This is a soft lightweight military boot liner sock designed to keep your feet comfortable in the harshest conditions. Can be used as a skate/ski liner worn under a thermal wool sock for added blister protection, freshness, and warmth. Field tested by the military and suitable for activities such as hiking, outdoor work and sports. Content: 78% Coolmax, 18% Nylon, 4% Lycra Designed for the Canadian troops in Afghanistan Odour Control & Blister Prevention - Coolmax wicks away moisture from your feet keeping them dry, smelling fresh and blister free! 15 " Leg - Knee High Sock Light Weight: 100-125grams(XS-XL) Made proudly in Toronto, Canada You will receive 2 pair in a pack for the price listed :) Medium (Women's 5-9 Shoe / Men's 4-8 Shoe)