Swiftwick- ASPIRE TWELVE | Socks Built for Running | Minimal Cushion, Blister Resistant, Knee High Compression Socks SIGNATURE OLEFIN FIBER: Carefully selected high performance fiber that wicks moisture and will keep you dry and comfortable all day long. REDUCE FATIGUE - Firm compression supports every contour of the foot and calf to reduce fatigue and speed up recovery during endurance activities. SEAMLESS TOE: Virtually invisible toe seam eliminates friction and blisters in the toebox. BREATHABILITY: Channels in the upper part of the sock a and mesh footbed provide ventilation to increase breathability and keep the feet cool. MADE IN THE USA: Swiftwick Socks are designed and crafted in the USA