The Outdoorsman hiking and riding sock is ideal for anyone who spends hours on the trail. Whether it's hiking or horseback riding, our graduated compression designs stabilizes muscles providing less fatigue & tissue damage through improved circulation. Additional comfort is provided by the socks unique no bunch construction, fortified heel & toe and extra grip sole. Sizing Guide: Small (M 5-8/W 6-9.5) Medium (M 8-10/W 9.5-11) Large (M 10-12)