Swiftwick Aspire Four Socks - 4 inch, Black, X-Large

A firm compression sock with a solid four inches of ankle support for cycling, running and any other endurance sport.

• Firm compression provides contoured support and prevents bunching
• Lightweight Olefn fber 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 toebox
• Mesh footbed and channeled upper increase breathability
• Made in the USA