DESC: A cold-weather junkie, this -15 F bag has a moisture-shedding shell and 600-fill goose down insulation for great wind- and weather-protection. Performance-cut mummy shape is more efficient by reducing girth at shoulder, hip and lower legs. Conduit(TM) SL laminate has an exterior water-repellent coating and an inner membrane that resists water penetration. High-quality 600-fill-power goose down is warm, lightweight and compressible. Multi-baffle, tailored hood has a down-filled face gasket which makes hood closure more comfortable and effective. Ergonomic draft collar drapes comfortably over neck and shoulders, sealing out drafts. Trapezoidal footbox is shaped to preserve loft and allow the goose down to drape closer to the feet, maximizing warmth. Full-length, two-way locking zipper sliders are backed by anti-snag tape; insulated zipper gusset seals in heat. Tie-in loops stabilize Mountain Hardwear 3D Upgrade Liner, sold separately. Comes with stuff sack and mesh storage sack.