The SmartWool story started on a rugged Colorado ski slope 20 years ago with the belief that toes didn’t have to be cold. One simple pair of Merino socks challenged the conventional wisdom and forever changed the way outdoor enthusiasts looked at their feet. At the heart and soul of every SmartWool® product is the amazing fiber we use: nature's finest Merino. Used properly, we think it's the best fiber available for outdoor apparel–it’s a year-round fabric, it allows moisture vapor to pass right through and naturally resists odours. All so you can do more of what you love, in extraordinary comfort.