On Running Elite Run Sock High Unisex – Black is a premium performance running sock designed to deliver comfort, support, and breathability for racing, tempo runs, and everyday training. Crafted from lightweight yarn, it promotes excellent ventilation, while targeted compression zones, built-in arch support, and a ribbed instep provide a secure, locked-in fit. Ventilation panels help reduce heat buildup and minimize the risk of blisters, and strategically placed cushioning with extra padding around the Achilles enhances comfort and protection during long or fast runs. Finished in a sleek Black colorway with reflective yarn on the cuff for added visibility, the Elite Run Sock High is built to keep you performing at your best.