Patagonia Bivy Hooded Vest Excellent pre-owned condition Teal and Rust with mushroom print lining XS Patagonia's Hooded Bivy Down Vest is durable, rugged, and water-resistant because of the long-lasting DWR coating. The vest is insulated with 600-fill recycled down, which comes from reclaimed down products that would otherwise be discarded. This hooded version from 2016 has a mushroom-print lining, which has become a hard-to-find and much sought-after Patagonia RARE piece.