Perform with the power and comfort of ZQ-certified Merino wool in Smartwool Hike Light Cushion Crew socks—formerly known as PhD® Outdoor. they've updated their best women's hiking socks to include more sustainable materials with the addition of recycled nylon, improved durability and mesh zones, and an even more perfect fit. But, don't worry. These fan-favorite sock technologies aren't going anywhere—offering you all-day comfort and natural performance in a women's-specific fit. A crew height helps add coverage on the trails and light cushioning along the entire bottom of the foot helps keep you comfortable when the ground isn't. Take care of your feet with our best-fitting, best-feeling hiking socks.