Smartwool socks are made from Merino Wool blends and innovative technology. Merino wool naturally wicks moisture and is quick-drying, odour resistant and thermoregulating. Each Smartwool sock is designed differently with specific tech for longevity, comfort, and support. Look under the Tech & Care tab in the product description, to find special features of each style such as Shred Shield, Virtually Seamless, 4 Degree™ elite fit, Indestructawool™, and many more.