For 12 years, the Air-E-Ator® has set the standard for performance athletic socks. The 'King of Multi-Sport' Air-E-Ator® is a true original. The Stayfast™ cuff provides a secure, durable, dynamic fit, and the sculpted Air-E-Ator® mesh weave travels all the way around the sock to aid airflow and moisture transfer. En-Duro-Skin™ construction reinforces the external heel & toe puncture" areas, while Achill-E-Shield™ strengthens the high-stress area of the Achilles tendon area. The Sole2™ system ensures that durability and wicking co-exist in the all important sole.