The Aztec is based on our award winning Light ski and snowboard sock with some design thrown in. It provides light cushioning under the foot and over the shin for comfort in these high impact areas. The Definitive Fit SystemTM delivers specially designed elastics for a superior fit and our signature blend takes care of the rest. Incredibly warm, dry, ultra soft and stink free for days of adventure in the mountains, line after line, day after day, season after season.