Need a sock that can keep up with you on your longest trail runs? Look no further. Our Women's PhD® Pro Endurance Print Crew socks feature Shred Shield™ technology to reduce wear from toes, along with Indestructawool™ technology for a more durable sock. We use minimal and targeted sole cushioning and malleolus ankle cushion designed for protection on the most rugged trails. Top that off with a dialed fit and in-shoe comfort and these Merino socks were built to go as far as you want to go, with unwavering comfort and performance.