THE FOUR ... a compression sock with a 4" ankle-support double cuff which sits at the one-quarter calf level.

If Swiftwick claimed a masterpiece, the Aspire would be our Mona Lisa. The natural evolution of our Performance line, we have constructed a sock that is unmatched in comfort, moisture management, and compression. We have eliminated the toe seam. Linked toe technology means there will be no bunching in the toe box, no pinky toe torture, and event you can't finish from a blister. You demand the best gear from head to toe because you know that each part has a direct influence on your performance.

You might even wear these when not riding your bike!  Great for running too!