An excellent compliment for over-the-ankle light hiking shoes, the SmartWool Adrenaline Light Crew sock provides performance and comfort for speedy ascents and quick descents to the valley floor. A key component is the SmartWool fiber, known for its industry leading ability to move moisture fast, while still in the vapor stage, keeping the foot dry when hot and quickly dispersing warmth-robbing moisture when it's cold. The SmartWool Adrenaline Light Crew offers foot hugging ankle and arch braces as well as a 4-way Contour Flex Zone diagonal knit instep to keep the sock in position, thus leaving binding, bunching, and sock slippage in the dust.