The Swiftwick ASPIRE™ Zero Bike Socks are comfortable, light and with the low profile you love. These socks are engineered with a firm compression and a thin profile for a responsive feel. These socks are made with Fiber First™ moisture wicking technology where high-performance fibers are sculpted into breathable designs constructed to move moisture away from your feet. The ASPIRE™ 's firm Contoured Compression® supports every contour of the foot to reduce fatigue during endurance activities while their zero-cuff height sits below the ankle with minimal extension above the shoe for the perfect look and feel. The Swiftwick ASPIRE™ Zero Bike Socks will become your favorite socks ever!