It was in rugged conditions that C. C. Filson designed his goods. He owned his own mill and manufactured Mackinaw Wool clothing and blankets, knit goods, as well as selling boots, shoes, moccasins and sleeping bags specially designed for the frigid North. Filson kept in close contact with his customers, improving his goods to meet their specific needs. The stampeders depended on Filson. In that era, clothing wasn't a matter of choice, but of survival.
Over the years, Filson's philosophy has never changed: Make sure it's the absolute best. Clinton Filson spent a lot of time talking to his customers and refining his designs to their specifications. So it's not surprising that the items that worked then still work today, over 120 years later. Comfort, protection and durability never go out of style.