Purchase 5 Pairs of socks and receive a free 5.11 knife.

Two levels of 511 Sock now available! 511 Tactical Gear is now offering "Level 1" and "Level 2" socks in 6 inch and 9 inch (over the calf) sizes. In a nutshell "Level 2" socks are thicker and designed for cold temperatures

These are by far the most popular sock on the market today! These socks provide unmatched comfort and performance. With Coolmax for wicking, nylon and rubber for strength, and spandex for comfort, this sock is an integral part of the Shock Mitigation System technology. 511 socks have 12 zones of varying compression and fabric blends for increased blood circulation, heat-reduction, added stress relief, comfort, and resiliency. At 511, a lot of engineering is out behind even the smallest things we make to help you perform at your best.