The Filson Men's Ultra Light Jacket is a lightly insulated jacket for cool spring days or boosting a hardshell in the winter. The 60g of PrimaLoft; Gold Insulation fills horizontal baffles to insulate your Upper body on the trail in cool weather. Just enough to get you through while getting the blood pumping along the pathways. A Cordura; ripstop nylon exterior shell is tough and treated with a durable water resistant coating to shed light rain or even the unexpected Snow. Features of The North Face Infant Glacier One Piece Elastic cuff and waist closure for added ease and comfort Reverse coil zipper Moleskin-lined handwarmer pockets and inner collar