Western Mountaineering VersaLite Sleeping Bag - Rated to -12°C

The Western Mountaineering VersaLite is a -12°C down sleeping bag and the warmest in the ExtremeLite™ series. It's for cold sleepers and alpine climbers who want real warmth on colder nights without carrying a heavy bag – the whole thing weighs around 900g.

Inside is 850+ fill power goose down lofting to 17cm (6.5"), held in continuous baffles so you can shift the down over you when it's cold or spread it out when the temperature rises. A full draft collar and draft tube seal in the warmth, and the 12D ExtremeLite™ ripstop shell keeps weight and pack size low. The cut is roomier than a standard mummy, so there's space to sleep in a light layer without compressing the insulation.

Choose it when a standard three-season bag isn't quite enough: late autumn and early spring trips, alpine bivvies, high-altitude camps, or simply if you always feel the cold.

Why you'll love it

• Rated to -12°C – handles cold shoulder-season and alpine nights
• Around 900g – warmth without the weight penalty
• 850+ fill power goose down – high warmth-to-weight and excellent compressibility
• Continuous baffles – shift the down to suit the night
• Full draft collar and tube – blocks cold air at the neck and zip
• Roomy mummy fit – more comfortable than a standard mummy

Good to know

• Shell: 12D ripstop nylon (ExtremeLite™)
• Loft: 17cm (6.5")
• Total weight: 850g (165cm), 905g (180cm), 965g (200cm)
• Fill weight: 510g (165cm), 565g (180cm), 625g (200cm)
• Girth, shoulder/hip/foot: 157/135/99cm (165cm and 180cm), 160/137/99cm (200cm)
• Packed size: 20 x 38cm, all sizes
• Includes an ultralight stuff sack and a breathable mesh storage bag
• Made in the USA

Who it's for

Cold sleepers, alpine climbers and backpackers heading out in the colder half of the three-season window, or up to high-altitude camps. Whatever your experience, if you've been shivering in a lighter bag, this is the upgrade.