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 jacketit performs without fail, no matter what role it serves. One long-time Filson employee recalls his father packing his favorite Jac-Shirt on each and every hiking, camping and canoeing trip taken with his Boy Scout troop throughout the 1980s. Dad still wears that same Jac-Shirt, a few Filson repairs later.