Smartwool Hike Light Cushion Pattern Ankle SocksPerfect fit. Powerful durability. That's what you get when you put on the Hike Light Socks - formerly known as PhD Outdoor. Featuring Smartwool's top sock technologies, dialled-in fit systems, updated mesh zones, and extended durability zones, these socks have been upgraded to help you push any summit or enjoy any trail in absolute comfort. The Smartwool Hike Light Cushion Socks are fitted with Light Cushion which provides the ideal cushion for varied trail and road terrain. Featuring Indestructawool technology which has a patent-pending construction method for exceptional durability and comfort, while the Virtually Seamless toe provides extra comfort and reduces the risk of irritation. The socks also feature the 4-Degree Elite Fit System which uses two elastics for greater stretch and recovery to help keep the sock in place and lastly, made with body-mapped mesh ventilation zones, the socks provide optimum moisture management and maximum breathability, keeping the feet feeling cool and dry when out on a long walk. Sustainability - 31% Recycled Nylon.