3-Season Cold Weather Mummy Sleeping Bag

Expedition-grade warmth. Packable enough to take anywhere.

Built around 90% white duck down with 650+ fill power, this mummy sleeping bag delivers serious insulation without the bulk. Rated to -25°C, it handles deep winter camping, high-altitude basecamp nights, and everything from shoulder-season shoulder trips to full winter expeditions.

The 320T waterproof nylon shell sheds moisture and resists tearing, while the 320T Chunya spinning lining stays soft against skin through long nights. YKK zippers run smooth and reliable, and the mummy structure locks in heat where it matters. Two bags can be zipped together into a double — useful for partners or for extra layering on extreme nights.

Compresses down to 26×36cm for pack-friendly storage. Available in Black-Red and Black-Blue, with fill weight options from 1000g to 1800g.