Swiftwick - ASPIRE ZERO, No-Show Socks for Running MADE IN THE USA: Swiftwick socks are made in the USA, an important commitment we make to our customers and local communities. Purchase includes one pair of socks. SIGNATURE OLEFIN FIBRE: Made of high-performing, lightweight Olefin fibre that wicks moisture and dries quickly. Abrasion resistant, strong and colourfast. Material composition is 55% nylon, 40% Olefin fibre and 5% spandex. ARCH BAND SUPPORT AND CHANNELLED UPPER: The arch maintains shape to deliver lasting support. Thin channelled upper improves breathability. MESH FOOTBED DESIGN: Mesh knit pattern in the footbed designed for optimum breathability. Y-HEEL CONTOUR AND SEAMLESS TOE: Y-shape stitch creates a contoured heel pocket that moves with the foot. Virtually invisible toe seam eliminates friction in the toebox.