Western Mountaineering VersaLite Sleeping Bag - -12°C Down Bag (Warm 3-Season, 850+ Fill)

The Warmest in the Ultralight Range

The Western Mountaineering VersaLite is the warmest sleeping bag in the ExtremeLite™ series, built for climbers and adventurers who want serious warmth without carrying extra weight.

With 6.5" (17cm) of loft and packed with 850+ fill power goose down, it delivers dependable warmth down to -12°C, making it ideal for colder sleepers, alpine use, and extended shoulder-season trips.

Combining a roomier fit, full draft collar, and continuous baffles, the VersaLite offers exceptional warmth, comfort, and versatility in a lightweight package.

Why You'll Love It

Warm to -12°C - Ideal for colder conditions
Lightweight - Around 900g total weight
850+ fill power down - Premium insulation
Roomier fit - More comfort than standard mummy bags
Extended season use - Handles colder nights with ease

Built for Colder 3-Season Conditions

Perfect for:

Alpine climbing
Cold-weather backpacking
Shoulder-season adventures
High-altitude trips
Cold sleepers

Designed for when standard 3-season bags aren't quite enough

Performance Features

Extended Warmth (-12°C)

Colder condition performance

Keeps you:

Warm in late autumn and early spring
Comfortable in alpine environments
Protected during colder nights

850+ Fill Power Goose Down

Premium insulation

Provides:

High warmth-to-weight ratio
Excellent compressibility
Long-lasting loft

Continuous Baffle System

Adaptive insulation control

Allows:

Shifting down for colder conditions
Balancing warmth when temperatures rise
Greater versatility

Full Draft Collar + Tube

Advanced heat retention

Helps:

Seal in warmth
Block cold air
Improve overall efficiency

ExtremeLite™ Shell (12D)

Ultralight and breathable

Benefits:

Low weight
Compact pack size
Durability for its class

Roomy Mummy Fit

Comfort-enhanced design

Provides:

More space than standard mummy bags
Improved comfort
Room for light layering

Technical Specifications

Temperature Rating: -12°C
Fill: 850+ Fill Power Goose Down
Loft: 17 cm (6.5")
Shell Fabric: 12D ripstop nylon (ExtremeLite™)

Weights:
165cm: 850g
180cm: 905g
200cm: 965g

Fill Weights:
165cm: 510g
180cm: 565g
200cm: 625g

Girth (Shoulder/Hip/Foot):
165cm: 157 / 135 / 99 cm
180cm: 157 / 135 / 99 cm
200cm: 160 / 137 / 99 cm

Packed Size:
All sizes: 20 x 38 cm

Origin: USA

Includes:
Ultralight stuff sack
Breathable mesh storage bag

Perfect For

Cold sleepers
Alpine climbers
Backpackers
Shoulder-season adventurers
High-altitude trips