Heathered Wool Jac-shirtThe Filson Jac Shirt has provided versatile warmth for nearly five decades. As a heavy shirt, an overshirt, or an insulating layer under a rain jacket, its flexibility has made it an outdoor staple. This version is made with a wool blend that increases durability and reduces drying time while maintaining wools renowned insulating ability, wet or dry. The chest pocket buttons are hidden beneath the pocket flaps to avoid snagging. The front and