Built for alpine expeditions, winter mountaineering, and cold-weather backpacking, this lightweight down sleeping bag delivers exceptional warmth without sacrificing packability. Filled with premium 800 fill power European goose down and engineered with advanced L.O.F.T 3D™ baffle construction, it minimizes cold spots while maximizing heat retention in harsh mountain conditions. The tapered mummy shape keeps weight low and thermal efficiency high, making it an excellent choice for technical alpine adventures and multi-day treks.

Designed for demanding terrain, this winter sleeping bag combines durable 20D Pertex® Quantum fabric on the base and footbox with ultralight 10D Pertex® Quantum on the upper sections for increased loft and compressibility. Longitudinal chest baffles help trap warmth around your core, while sidewall baffles improve comfort for side sleepers and prevent heat loss along the seams. A down-filled neck collar, insulated zip baffle, adjustable hood, and anatomically shaped foot box all work together to keep you warm and comfortable in sub-zero temperatures.

Hand-filled in Derbyshire, UK, this hydrophobic goose down sleeping bag is made for serious mountain use where warmth, reliability, and low pack weight matter most. With a lower comfort limit of 10°F / -12°C, plus anti-snag YKK® zippers, an ultralight compression dry bag, and a water-resistant storage sack included, it’s a dependable sleeping bag for alpine climbing, winter camping, ski touring, and high-altitude trekking.