The Men’s PhD OUTDOOR Medium Crew Socks from Smartwool have all the high-performance attributes you need when you’re out on the trails. Indestrucawool technology provides optimal comfort with maximum durability. Medium cushioning underfoot provides impact absorption for those rocky hikes on hard ground. The body-mapped mesh zones provide breathability in areas where you need it most. Merino Wool is a lightweight fabric that wicks moisture away from the body and dries quickly, so you don’t heat up in your hiking boots. Virtually seamless toes use minimal stitching to avoid friction and blisters.