Combining high-quality down, technical expedition-proven construction elements and a durable water resistant outer fabric, the Glacier 450 is an extremely versatile bag ideal for all-round mountaineering, trekking and climbing expeditions where nighttime temperatures can dip below freezing. The 435g of minimum 700 fill power DOWN CODEX-approved duck down offers excellent warmth for minimal weight, while the lightweight and water resistant 30-denier DRILITE® LOFT™ outer fabric with recycled face. Trapezoid baffles across the top of the bag ensure optimal loft, reduce cold spots and prevent down migration, while at the foot of the bag a six-baffle system focuses warmth around your feet—an essential in sub-zero conditions. In the hood, a five-baffle system ensures the down is optimally distributed for warmth and protection over long-term use. Inside the bag, our time-tested EXL® elasticated stitching system minimises dead airspace, reduces drafts, and pulls the liner fabric away from the down allowing it to loft effectively for maximal warmth. Meanwhile, a full-length Gemini™ entry zip baffle practically eliminates heat loss in this vulnerable area and is stiffened so it won’t catch in the zip. The low-profile magnetic Lode Lock™ closure and collar drawcords are effective and easy to use in the dark. With a women’s-specific Alpine fit to maximise thermal performance while minimising weight and a Good Night’s Sleep Temperature of -8oC (18oF) the Glacier 450 is ideally suited to summer alpinism and general mountaineering, as well as lower altitude trekking, backpacking and camping. Womens Glacier 450 Long Sleeping Bag