The perfect warmth for just about everything, Patagonia's classic Down Sweater is lightweight and windproof with a shell made of NetPlus 100% postconsumer recycled nylon ripstop made from recycled fishing nets to help reduce ocean plastic pollution, and it's insulated with 800 ...The perfect warmth for just about everything, Patagonia's classic Down Sweater is lightweight and windproof with a shell made of NetPlus 100% postconsumer recycled nylon ripstop made from recycled fishing nets to help reduce ocean plastic pollution, and it's insulated with 800-fill-power 100% Responsible Down Standard down certified by Control Union (CU 880272). The purchase of Responsible Down Standard certified products demonstrates demand for better animal welfare practices in the down and feather supply chain.