Sizing
Medium Men 5-8.5 Women 6.5-10
Large Men 9-12.5

Suggested Use
This is the best sock I have ever owned for hot weather, urban hiking. I wear them almost every day in the summer with my low cut hiking shoes. I first tried them out hiking the hill towns of Italy during a huge heat wave and I can't say enough about how they performed.

Material
33% merino wool, 33% polypropylene, 32% nylon, 2% spandex
AXT 50/50™ is a revolutionary intimate blend of merino wool, wool, and top- quality, long-staple polypropylene fiber that dries 25% faster than other merino wool socks and is 31/2 times more abrasion resistant. The blend also resists deterioration from mildew, perspiration, and weather. Fox River socks with AXT 50/50™ improve upon merino alone by offering better moisture transfer to help keep feet dry and prevent blisters. Fox River's AXT™ socks also have greater durability for extended wear. AXT™ socks weighs less than other merino wool socks, so wearers carry a lighter load. And, AXT™ socks do not support bacterial growth in the sock, so there is less chance of foot odor.

Mark says READ THIS, these socks are great for this reason:
AXT 50/50™ is a revolutionary intimate blend of merino wool, wool, and top- quality, long-staple polypropylene fiber that dries 25% faster than other merino wool socks and is 3-1/2 times more abrasion resistant. The blend also resists deterioration from mildew, perspiration, and weather.

Fox River socks with AXT 50/50™ improve upon merino alone by offering better moisture transfer to help keep feet dry and prevent blisters. Fox River's AXT™ socks also have greater durability for extended wear. AXT™ socks weighs less than other merino wool socks, so wearers carry a lighter load. And, AXT™ socks do not support bacterial growth in the sock, so there is less chance of foot odor.