Bring the natural performance features of responsibly sourced ZQ-certified Merino wool with you on every hike in Smartwool's Women's Hike Light socks (formerly known as PhD Outdoor). Thermoregulation and sweat management join forces to help keep you comfortable all day long, while Smartwool's innovative sock technologies and light cushioning along the entire bottom of the sock help you take care of your feet on every hike. They've also updated Smartwool's hiking sock construction to be more sustainable with the additon of recycled nylon, more durable, and more breathable-without sacrificing that women's-specific, tailored-to-you fit. So you can tackle more trails and enjoy more summits.