Three layers of fibers work in harmony in the Lorpen T3 Light Mini Running Sock. When you are pounding pavement, it"s nice to know that your socks are working as hard as you are. The secret ingredients include Tencel for softness, Coolmax for wicking capabilities, and EA Lycra for durability and resilience. Add to the mix a flat-knit toe seam to reduce the chances of chafing and blistering and a little bit of cushioning throughout, and you"ve got happy feet from the beginning to of your run to the end.