Design and Details Moisture Wicking: Your body heats, Merino Wool absorbs moisture before it turns into sweat on your skin, and releases it, leaving you dry Thermoregulating: Natural crimp in wool fiber that provides pockets of insulation- holding and releasing heat dependent on what the body is doing Anti-Microbial: Odor resistance is unique to wool, the chemical structure stops sweat and bacteria build-up, so go ahead and take a whiff All Day Comfort: Silky Merino Wool, high-density knitting, and true seamless toe provide an incredible fit and constant rebound No Show Tab Ultra-Lightweight