The Swiftwick Aspire Zero sock is ideal for running, cycling, triathlon and other endurance sports. A no-show sock that sits below the ankle with minimal extension above your shoe, and will not slide down.
- Firm compression provides contoured support and prevents bunching
- Lightweight Olefin fiber in a minimum cushion design is cool, wicks moisture and dries quickly to keep you performing at your best
- Y-Heel contour creates a contoured heel pocket that moves with the foot
- Virtually invisible toe seam eliminates friction in the toe box
- Mesh footbed and channeled upper increase breathability
- Made in the USA