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 structure also allows wool to release dirt and odors, making care and maintenance a breeze.

• Sewn at Filson, Seattle with 15-oz. 100% wool
• Wind-resistant
• Insulates wet or dry
• Serves as a heavy shirt, overshirt or light jacket
• Two flap-covered chest pockets with hidden buttons
• A Filson favorite for over 50 years