If Swiftwick claimed a masterpiece, the ASPIRE line would be their Mona Lisa. Perfect for narrow feet, the ASPIRE compression sock is constructed for unmatched comfort, moisture management and an optimal fit. It's thin and light for minimalist running shoes, tight cycling shoes and the form fit hockey skate or ski boot. Swiftwick eliminated the toe seam using linked toe technology, which means no bunching in the toe box, no pinky toe torture, and no event that you can't finish due to blisters... This sock will directly influence your run. Aspire Zero: No-show sock Aspire One: Ankle sock Aspire Two: Quarter length