Filson Jac-Shirt

The Filson Jac-Shirt – a versatile performer that’s earned a favored status in outdoorsmen’s kits since the 1970s. Introduced into our product line some fifty years ago, this icon has served more outdoorsmen in a wider range of conditions than we could begin to count. A overshirt, insulating layer or light jacket–it performs without fail, no matter what role it serves. Sewn in our Seattle factory, our original Jac-Shirt is an outdoor staple that provides warmth in all conditions like only 100% wool can. The 15-oz. fabric is crafted with a tight weave that delivers an optimum balance of breathability and wind resistance, while providing durability for decades of service. Wool has a complex fiber structure consisting of thousands of microscopic filaments sheathed in lanolin-coated scales. This unique structure makes wool naturally water-resistant, moisture-wicking and warm even if it gets wet–the very reasons it’s been the champion of outdoor clothing for centuries. This same fiber struc