No matter the mountain you climb, your feet will stay cool and dry with Eco Coolmax®. Not only is it good for any adventure but it's good for the environment since Eco Coolmax® is made from 100% recycled resources. Women's Fit Stay Up Power Comfort Toe Seam Arch Support Reinforced Heel/Toe Shock Absorption Eco Coolmax® Anatomical Memory Knit Moisture Wicking Breathable Mesh 58% COOLMAX® EcoMade Polyester, 35% Nylon, 5% Polyester, 2% Spandex Style #2551