Hike how you like in Smartwool's responsibly sourced, ZQ-certified Merino wool Hike Light socks. Formerly known as PhD Outdoor, these hiking socks are packed with all their tried-and-true sock innovations, like their Indestructawool technology for enhanced durability, our 4 Degree Elite Fit System for a dialed-in, performance-oriented fit, and their Virtually Seamless toe for even more comfort. They've extended durability zones and updates mesh areas to help maximize breathability without sacrificing the perfect sock fit. Light cushioning on the entire bottom of the foot to bring more comfort to your favorite low-cut hiking shoes. Storm more summits while taking care of your feet with our Merino wool performance socks.