Patagonia Jackets - Patagonia Bivy Down Jacket - Forge Grey :: Men > Jackets. Cuff Details: Self-fabric cuffsWeight: 944gFit: Hip LengthPockets: Side-entry insulated handwarmer pockets. interior chest pocketMaterials: 100% Nylon Canvas. Lining: 100% Polyester. Insulation: 100% Traceable DownFastening: Full-length centre-front zipper with outer storm flap with snap fasteningJacket Shell: Durable nylon canvas with DWR (Durable Water Repellent) finishJacket Insulation: Insulated with 100% Traceable Down (600-fill power duck down) Size: X-Large,Medium.