If you're serious about hiking, these are the socks for you. Premium merino-wool blend wicks moisture, breathes and naturally resists odor. Targeted cushioning provides comfort in just the right spots to keep you going all day. 54% wool merino, 43% nylon, 3% elastane. Machine wash and dry. Strategically placed cushioning for comfort without the bulk, making them perfect for today's lightweight hiking shoes. Virtually seamless toe for enhanced comfort without chafing. 4 Degree elite fit system for a dialed-in, performance-orietned fit. Indestructawool™ technology with extended durability zones ensure long-lasting hiking performance. Wool helps manage moisture and resist odors. Made in USA of imported materials. Men's Smartwool Hike Targeted Cushion Mid Crew Sock Charcoal Medium, Wool Blend/Nylon