Western Mountaineering UltraLite Sleeping Bag - Rated to -7°C

The Western Mountaineering UltraLite is a -7°C three-season down sleeping bag, and the benchmark most ultralight bags get measured against. It's for backpackers, thru-hikers and alpine climbers who want dependable warmth from spring to autumn at around 820g.

The recipe is simple: 850+ fill power goose down lofting to 14cm (5.5"), an efficient performance mummy cut that warms up fast, and a 12D ExtremeLite™ ripstop shell that keeps weight and bulk to a minimum. Continuous baffles let you shift the down over you on colder nights or away when it's mild, and an insulated draft tube and collar stop warmth escaping at the zip and neck. It packs to 18 x 33cm.

Choose it as your one bag for long-distance trails, weekend trips and alpine bivvies where -7°C gives plenty of margin. It's an award-winning, best-selling design for good reason.

Why you'll love it

• Rated to -7°C – true three-season warmth
• From 795g – ultralight without giving up features
• 850+ fill power goose down – exceptional warmth-to-weight
• Continuous baffles – shift the down to suit the night
• Insulated draft tube and collar – seals cold air out
• 12D ExtremeLite™ shell – minimal weight, excellent packability

Good to know

• Efficient performance mummy cut
• Loft: 14cm (5.5")
• Total weight: 795g (165cm), 820g (180cm), 880g (200cm)
• Fill weight: 425g (165cm), 455g (180cm), 480g (200cm)
• Girth, shoulder/hip/foot: 150/130/97cm (165cm and 180cm), 152/132/97cm (200cm)
• Packed size: 18 x 33cm, all sizes
• Includes an ultralight stuff sack and a breathable mesh storage bag
• Made in the USA

Who it's for

Backpackers, thru-hikers and alpine climbers of any experience level who want one reliable three-season bag for multi-day trips, from long-distance trails to weekend adventures.