The Interval compression running sock is made of high-tech polyester, making it lightweight, malleable, tear-resistant, and quick-drying. Featuring arch support, it's designed to protect your feet even on the most demanding runs. It features anti-torsion support bands, an Achilles tendon cushion, and proprioceptive compression that gradually applies pressure to the foot. The cushion helps prevent pain from impact, while the gradual compression applied to the foot promotes proprioceptive control of the ankle joint.