Swiftwick- PERFORMANCE TWO | Socks Built for Trail Running & Cycling | Fast Drying, Lightweight Crew Socks SIGNATURE OLEFIN FIBER: Carefully selected lightwieght fiber that wicks moisture and will keep you dry and comfortable CONTOURED COMPRESSION FIT: Designed to support the contours of your foot. No voids, bunching, or blisters. LONG-LASTING: Endures the needs of an active lifestyle. Nylon reinforced heel and toe for durability in high-abrasion areas. HIGH DENSITY KNIT: 200 Needle construction is soft and durable MADE IN THE USA: Swift Socks are designed and crafted in the USA