Smartwool Hike Light Cushion Crew SocksPerform with the power and comfort of responsibly sourced, ZQ-certified Merino Wool in the Hike Light Cushion Crew Socks. Formerly known as PhD Outdoor, the Light Cushion Crew has been updated to include more sustainable materials with the addition of recycled nylon, improved durability, updated mesh zones, and an even more perfect fit. Smartwool's fan-favourite sock technologies aren't going anywhere - offering you the comfort and performance you expect from the Smartwool. 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 - 28% Recycled Polyamide.