When the backcountry beckons, the Patagonia Baby Down Sweater Vest heeds the call with versatile warmth that layers beautifully. The Baby Down Sweater Vest features lightweight, windproof and tear-resistant 100% recycled polyester mini-ripstop shell fabric with a 100% polyester plain-weave lining, both treated with a DWR (durable water repellent) finish. Down is warmer, lighter and more compressible for its weight than other insulating fiber so, for core warmth, the Down Sweater Vest is insulated with 600-fill-power Traceable Down (duck down traced from parent farm to apparel factory to help ensure the birds that supply it are not force-fed or live-plucked). Features: Insulated with 600-fill-power Traceable Down (duck down traced from parent farm to apparel factory to help ensure the birds that supply it are not force-fed or live-plucked) and easily layers in colder conditionsDWR (durable water repellent) finishFul