Photo by Austin SchmidtHandmade in San Jose since 1970.
Ultralight down sleeping bags, quilts and down clothing, built with 850+ fill power goose down.
It all started with a mountain, a sewing machine, and a dream.
Over fifty years ago, two young mountaineers started making quality outdoor gear to address a need for high-end mountaineering equipment. Fifty years later, we’re still in the business of getting people outside.
All of our gear is proudly made in the USA, just like it was fifty years ago. With our premium ultralight fabrics, high fill-power quality down, and precise craftsmanship, we think our gear can keep up with you for another fifty. Whatever your adventure, our mountain-ready down apparel and high-quality sleep systems are up for the challenge.
- Handmade in San Jose since
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- Authorized dealers worldwide
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- Fill power goose down
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- Sleeping bags and quilts
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35°3 bags
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15°8 bags
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5°5 bags
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Explore our award-winning sleeping bags
Shop all bags
ExtremeLiteAn ultralight gear lover's dream.15 models45 to 10°Ffrom 14.2 oz
MicrofiberThe perfect balance of breathability, water resistance & durability.12 models35 to -25°Ffrom 1 lb 5 oz
StormShieldOur lightweight, two-layer laminated shell for variable-weather mountaineering.9 models15 to -40°Ffrom 2 lb 2 oz
Gore InfiniumBuilt to handle your most extreme adventures.6 models15 to -40°Ffrom 2 lb 6 oz
Popular gear picks
5¼″ baffle spacing keeps the down where you put it.
850+ fill power goose down.
From the beginning, we’ve chosen high fill power goose down because no other insulation matches its combination of warmth, weight, and longevity.
Continuous baffles
Our 2- and 3-season bags are built with baffles that run around the bag from zipper to zipper, so the down can be shifted: to the underside on warm nights, over you when it gets colder. Lay the bag flat and move it by hand.
An honest 850+
Certified laboratory tests can produce higher numbers under idealized conditions. We list a practical, conservative rating that better represents what goes into your bag.
Ethically sourced from a long-time supplier in Poland: geese raised on egg farms, never live-plucked, never caged.
How our bags are built
Made by hand in San Jose, California.
Every Western Mountaineering sleeping bag is made by hand in our San Jose factory, by skilled craftspeople, many of whom have been with us for decades.
Down from PolandEthically sourced, never live-plucked or force-fed, from a long-time supplier we oversee closely.
Shells from Japan and South KoreaProprietary fabrics woven to our exact specifications.
Repaired where it was builtWe inspect, repair and refurbish in San Jose, so a bag can last for decades.
Discover our dealers
For over fifty years, we have supported local outdoor shops and our outdoor communities by selling exclusively through brick and mortar retailers.
While we now sell our gear online, we believe the best way to shop outdoor gear and support your local community is by purchasing from your local retailer. With over 300 amazing dealers worldwide, we encourage you to visit your local outdoor shop and get your hands on our gear. Ask a dealer about our products today!
Not sure about length or fit?
Answer a few questions for a short list of models, or read on for the details behind each choice.
Try our sleeping bag guide