Our pro team’s top choice for high-intensity days, the 509 Tactical Sock offers a lightweight feel that’s perfect for milder conditions and riders who run hot. Zonal terry cushioning combines with added support around the arch and Achilles to drastically improve all-day comfort. Full calf length stays up inside your boots. The synthetic blend with nylon and LYCRA® breathes and dries fast while resisting abrasion for performance that lasts.