Patagonia built the Men's Bivy Down Reversible Vest to survive in the outdoors and keep you comfortably warm in cold conditions. A fresh take on a classic, this vest is reversible for a versatile style that is durable, rugged, and water-resistant thanks to the long-lasting DWR coating. The face side features a color block nylon plain weave fabric, while the reverse side features a lightweight, windproof polyester ripstop shell that offers a cleaner, more technical look. The vest is insulated with 600-fill recycled down, which comes from reclaimed down products that would otherwise be discarded. Both sides offer hand pockets for everyday storage and a welcoming escape for cold hands, with cozy micro-fleece lining built into pockets on either side.