FEATURES of the Arcteryx Men's Cerium LT Jacket Down Composite Mapping strategically places synthetic insulation in areas prone to moisture and down where you need the most warmth Lightweight yet durable face fabric with DWR finish repels moisture The higher, insulated collar with chin guard provides extra warmth and blocks wind without scratching your precious chin Two zippered hand pockets for hiding your secrets Low profile, elasticized cuff layers easily Made to be worn as a mid layer or a stand alone in cooler, dry conditions Conforms closely to the body, trapping heat closer to your core The 850 fill down makes this the lightest piece in this collection with an excellent warmth to weight ratio Packs down into the included stuff sack inside the pocket Arcteryx's trim fit is sized for a base layer and a trim synthetic or down filled mid-layer Maintains breathability to keep you comfortable even when active