Light Walking - Men's Ankle Size:Large (USM 9-12.5) The Outdoor Athlete sock is

The Outdoor Athlete sock is specifically designed for intense trail running because it keeps dirt out and supports the running gait

making them more prone to blisters

and backpacking can cause significant stress on the feet without proper protection from harsh terrains and weather

or trail running

Light Walking - Men's Ankle Size:Large (USM 9-12.5) The Outdoor Athlete sock is46% of walkers report foot issues according to the 2012 National Foot Health Assessment. Thorlo socks absorb the impact and friction from your shoes. The ONLY socks clinically proven to reduce foot pain & blisters. The Men's Light Walking sock is specifically designed for walking because it reduces lace pressure caused by shoe laces. The Light Walking has moderate padding for people who want medium protection or experience minor foot pain.