Light Walking - Men's Ankle Size:X-Large (USM 13-15) They are clinically proven to

They are clinically proven to protect your feet while reducing foot pain

Cushioned arch for a better fit

Specifically engineered to provide maximum protection for trekkers prone to blisters

The Classic Running sock is specifically designed for running because it supports the running gait

pressures and moisture for maximum protection

Light Walking - Men's Ankle Size:X-Large (USM 13-15) They are clinically proven to46% 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.