Designed with the pro rider in mind,Thin fit profile, ideal for year round wear,Features a meta-pad underneath the ball of the foot to lessen vibration and improve pedaling mechanics,Breathable and moisture wicking, designed to dry fast inside securely fitted cycling shoes,Naturally anti-microbial,Great for running, hiking, and on the bike,Machine wash cold, tumble dry low. No bleach, softeners or harsh detergents.,38% Nylon, 30% Merino Wool, 30% Recycled Polyester, 2% Lycra.