The Mil-Spec Sport Sock shares specifications with U.S. Military socks: they're built with anti-microbial silver filament yarn. The silver knit into the heel, toe and sole is proven to kill bacteria and promote moisture migration. The silver is game-changing. These socks are tough.
We made a slight change to the "Mil-Spec" design, adding a compression band on the foot for additional performance, comfort, and arch support. But we can't say enough about the stink stopping silver. It really makes a difference.
We aren't kidding about this sock being tough as nails. We gave it to some hard wearing friends and said “do your thing." The results? This sock stood up to heavy-use hiking, trail running, biking, and outdoor activity. But the real test? Cement work. Nothing destroys clothing more than hauling, grinding, sanding, and mixing bits of rock and cement. Our cement working friends gave them two thumbs up, which was the ultimate endorsement.