All about airflow.

With extra long length to accommodate knee-braces, the Riding Sock AIR features a polyspandex mesh upper panel for maximum ventilation. Moisture-wicking upper leg, reinforced toe and heel, silicone grip strips, ribbed arch and ankle support — everything you need, nothing you don't. Small fits men's size 5-8 & women's size 6-9, L/XL fits men's 9-13 & women's 10-13.