The Ibex Crew Sock is designed with activity in mind. This 21 micron, Merino sock sports a reinforced heel and toebox along with strategic areas of cushioning for long lasting natural wool performance. Flat knit toe seam. Machine wash inside-out to preserve the lofty feel of this perfect wool sock. Size M: W's 6-10, M's 5-8; Size L: W's 10-12, M's 8-12. Weight: 1.60.