What Our Gearhead(R) Experts Are Saying:"When it comes to subzero adventures, this sleeping bag is a game-changer. The 800-fill ProDown(TM) insulation keeps me toasty in extreme conditions, while the recycled fabric and clever design, like anti-compression pads and a vaulted footbox, ensure warmth and comfort all night long."The Inferno -20degF Sleeping Bag is your ultimate companion for tackling extreme cold in alpine and expedition environments. Packed with 800-fill ProDown(TM), this bag delivers superior loft and warmth even in wet conditions, ensuring a comfortable sleep when the temperature plummets. With a recycled nylon main body enhanced with Aluminized XReflex(TM) for superior thermal retention, and a waterproof, breathable Neovent Air(TM) head and footbox, this bag is designed to handle tough weather conditions. Features like anti-compression pads, a fitted hood, and a full draft collar keep warmth in and cold out, while the side half-zip allows for easy temperature regulation. When adventure calls in the harshest climates, the Inferno is ready to answer.