Filson has been in business since 1897, is headquartered in Seattle, Washington and is renowned for making their products in the USA. Â They use the highest quality materials and create some of the most durable apparel in the industry. Â Filson got their start making clothing to shield pioneering Americans headed west in the 18th century in search of gold. Â Now known for their expert workmanship with materials such as Tin Cloth and Mackinaw wool, you would be hard pressed to find higher quality clothes.