Swiftwick VIBE ONE Socks SIGNATURE OLEFIN FIBER: Every purchase comes with one pair of socks, made from high-performance, lightweight fiber that wicks moisture and dries quickly. Abrasion resistant, strong and colorfast. ARCH BAND SUPPORT AND THIN UPPER: The arch maintains shape to deliver lasting support. Thin upper is flat knit and light to improve breathability. FLEX ZONE: Half-density weave prevents bunching at flex points. 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. MADE IN THE USA: Every Swiftwick sock is made in the USA, an important commitment we make to our customers and local communities.