The Swiftwick Aspire Four Socks are created by a 200-needle machine process that yields a high density, seamless knit fabric. The process allows variability in the finished knit of the socks, as different parts meet different performance requirements. For example, the cushioned footbed gives way to the thin channeled upper -- both components playing a crucial role to increase your comfort.When you slip into a pair of Aspire Socks, you'll immediately feel that they're tailored for your feet. The arch band offers snug support in the midfoot, and the Y-shaped heel contour assures no bunching or overstretched feeling in the back. The
