Set The Groundwork For A Strong Workout. These Socks Contour Your Feet With Targeted Cushioning And Ventilation For A Distraction-Free Fit As You Run Or Train. Designed For Running And Training. Light Terry Cushioning Wraps Around Your Foot For Added Protection-Only Where You Need It,360 Degree Arch Support, Seamless Toe Construction, Anatomical Left And Right Foot Construction,3D-Knit Performaheel With Added Elastic Through The Achilles Creates A Shaped Fit And A Locked-In Feeling, Tab Is Padded For Extra Comfort.