The Classic Hike Light socks by SMARTWOOL are getting upgraded and it starts with recycled nylon. The first-ever Merino wool hiking socks are now made more sustainably than ever before. Light cushioning on the bottom of the sock and responsibly sourced, ZQ-certified Merino wool offers comfort and natural performance benefits that help take care of your feet on every hike. With a new mountain pattern and the same all-day comfort, SMARTWOOL's oldest (and best) Merino hike sock may be your new favorite.