These Smartwool socks are perfect for quick hikes or all day adventures. The crew height offers extra coverage and light cushioning provides comfort on any terrain. In a blend of 55% merino wool, 12% nylon, 30% recycled nylon and 3% elastane. Indestructawool technology with extended durability zones. 4 Degree elite fit system for a performance-oriented fit. Additional body-mapped mesh zones for added breathability. Virtually Seamless toe for enhanced comfort. Comfort welt with stay-put fit. Made in USA of imported materials.