The Bluebird jacket follows the "oversize" fashion trend. Its puffiness is partly due to its thickness, but the roomier fit also adds to its bulk. The down filling is, of course, traceable and RDS-certified. A great choice for proper freezing weather, and also for those who get cold easily, even in milder cold! Here are some initial reactions by our staff as the Bluebird arrived at stock: "Long zippers on the side create room for striding, very strong surface fabric. Oversize model." - Generous fit - Windproof, slightly water-repellent fabric - Insulated with genuine duck down - Fixed, adjustable hood - Spacious outer pockets and an inner pocket - Discreet Peak Performance logo on the sleeve The main zipper is two-way. It's recommended to open it from the bottom before sitting down to prevent lateral strain on the zipper. The water-repellent treatment on the outer fabric is PFC-free.