A slightly thicker cross country sock developed for optimal power transfer from foot to boot. Terry in the sole and shaft for a warming effect, added comfort and durability. An extra wide cuff for an awesome fit. Nanoglide in the toe and heel dramatically reduces the likelihood of blisters. Performance fit. Quick dry. Color: Norwegian Mix Sizes: Eur 37-39, 40-42, 43-45, 46-48. 50% Merino Wool, 21% Acrylic, 22% Nylon, 5% Friction Free, 2% Lycra. length from top of heel 7″