When Fall's to do list keeps you toiling deep into Winter, you ll be thankful for the quilted Bivy Down Vest from PatagoniaR. Insulated with 600 fill power duck down to warm you during December's icy temperatures. The Bivy Down Vest has a robust yet limber nylon canvas shell with a DWR durable water repellent finish on shoulders and collar for tackling jobs in any condition. Features: Regular fit Quilted nylon canvas Traceable Down third party certified, non live plumed, non force fed 600 fill power duck down Two insulated hand warmer pockets Snapped placket Avg. Weight: 610 g 21.5 oz Fabric: Shell: 5.5 oz 100% nylon canvas with DWR durable water repellent finish. Yoke: 4.2 oz 100% nylon with a DWR durable water repellent finish. Lining: 2 oz 100% polyester plain weave. Insulation: 100% Traceable Down 600 fill power duck down. Technology: Traceable Down: All down insulated outerwear styles are made with PatagoniaR Traceable Down, sourced from birds independently verified throughout the supply chain to have been neither force fed for foie gras production nor plucked of their feathers and down during their lifetime. Their 600 fill power U.S. sourced duck down in Patagonia's Men's Sportswear is of the same high quality as 600 fill power goose down.