Keen Women's Olympus Medium Crew

Keen says:

KEEN unveils the Olympus, one of the world’s longest-lasting socks with fiber that can withstand even the harshest environments for long periods of time. The body of the sock is made of moisture-wicking, non-itch merino wool while the toe and heel are reinforced with Dura-Zone, which contains a patented fiber proven to be 15 times stronger than steel, on a weight for weight basis. This incredibly resilient material provides superior abrasion resistance.