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 of Smartwool's tried-and-true sock innovations, like Smartwool's Indestructawool technology for enhanced durability, Smartwool's 4 Degree Elite Fit System for a dialed-in, performance-oriented fit, and Smartwool's Virtually Seamless toe for even more comfort. A women's-specific fit and light cushioning along the entire bottom of the foot helps you feel your best on every trail. They've extended durability zones and updates mesh areas to help maximize breathability without sacrificing the perfect sock fit in any hiking shoe or boot.