Cold, damp feet will make you uncomfortable any time of the year, but in the winter, they can be downright dangerous! These polypropylene sock liners extend the warm protection of your polypropylene thermals all the way down to your toes. When worn under a pair of wool or other heavy socks, these G.I. polypropylene sock liners will help wick then moisture away from your feet and help keep them warm. They also help prevent blisters and can increase foot comfort when worn under a second pair of socks in combat boots, tactical boots, work boots, ski boots, hunting boots or other footwear.

These are labeled shoe size 10 to 13, but in our experience they pretty much fit anything up to a size 13. This is th eonly size and color available.