Swiftwick Aspire Ankle Socks - 1"The Aspire offers thin breathable support with firm compression for enduring performance on runs rides and more. Engineered with moisture wicking fibers it keeps feet dry and secure with zero slippage. Engineered with an ultra thin profile to deliver unparalleled fit & feel Signature Olefin fibers wick moisture keeping your feet cool dry and blister free Grips the contours of your feet to support the arch and help reduce fatigue 53% Nylon 39% Olefin