Experience the power and comfort of ZQ-certified Merino wool in our Hike Light Cushion Crew socks—formerly known as PhD Outdoor. We've updated our top hiking socks to include more sustainable materials with recycled nylon, improved durability and mesh zones, and an even better fit. Our popular sock technologies remain, offering all-day comfort and natural performance. A crew height adds coverage on the trails, and light cushioning along the entire bottom of the foot keeps you comfortable on uneven ground. Prioritize your feet with our best-fitting, best-feeling hiking socks. These socks are designed to offer ultimate fit and performance to keep you comfortable on your next adventure with Indestructawool technology for extended durability zones. The 4 Degree Elite Fit System is designed for a dialed-in, performance-oriented fit. Enjoy enhanced comfort with a Virtually Seamless toe. Merino wool helps manage moisture, regulate temperature, and resist odors.