Built to breathe, these socks feature our VentTEK™ technology for enhanced airflow and moisture management where it matters most. With a comfortable fit, targeted cushioning, and ventilation zones that help keep your feet cool and dry, they’re made to go the distance. VentTEK® Mid Calf Performance Sock 2 Pair Pack Product Features : Comfortable seamless toeTemperature regulating for cool and comfortable feetBreathable mesh ventilation panels on front of legLight cushioning for maximum comfort without additional bulkArch support to reduce foot fatigue VentTEK® Mid Calf Performance Socks 2 Pair Pack in Black PolyesterNylonLycra Spandex, Size: Large Regular by Ariat