$570.00 - $605.00
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3 seasons of ultimate versatility; 20° F

Western Mountaineering's UltraLite is a versatile 3-season sleeping bag that weighs less than some people's backpacking whiskey rations. If your summer bike tour or backpacking trip is going to take you through different climates, the UltraLite is the way to go; its continuous baffles allow you to shift the down on top of you in cold temps, or underneath you when the weather warms up. With a 59 inch shoulder girth and 5 inches of high-lofting 850+ down, this efficient bag is good to 20° F. The full down collar helps to seal in heat around your neck without adding excess bulk, and the full length draft tube seals in heat along the zipper. The total weight of this very compressible package is under 2 lbs, so you can take the UltraLite anywhere.

Like all of Western Mountaineering's bags, the UltraLite is made by hand in San Jose, California. Their down is sourced from free-range mother geese who are never live-plucked or force-fed.

Winner of the Climbing Magazine Editor's Choice award


Brand Name:
Western Mountaineering
Temp Rating:
20º F
Seasonal Usage:
Three Season
Temp Rating Celsius:
-7° C
Bag Style:
Fill Weight:
Short: 15 oz / Reg: 16 oz / Long: 17 oz
Bag Loft:
5 inches
850+ Fill Down
Short: 1 lbs 12 oz / Reg: 1 lbs 13 oz / Long: 1 lbs 15 oz
Bag Length:
Short: 5 ft 6 in / Reg: 6 ft / Long: 6 ft 6 in
Circumference at Chest:
Short: 59 in / Reg: 59 in / Long: 60 in
Circumference at Hips:
Short: 51 in / Reg: 51 in / Long: 52 in
Circumference at Foot:
Short: 38 in / Reg: 38 in / Long: 38 in
Made In:
Bag Shell Material:
ExtremeLite™ proprietary fabric: extremely high thread count and ultra-lightweight
Bag Stuff Size:
7 x 13 in
Other Features:
5.25 inch continuous baffles allow you to shift the down underneath you in warmer temps, or on top of you in cold temps
Full down collar completely surrounds your neck for maximum heat retention
Full-length down-filled draft tube to seal in heat along the zipper
YKK #5 double pull zipper
Stiffening tape along zipper to prevent snags.
Please note, special care should be taken to avoid abrading the shell fabric; it is designed to be ultralight and super-compressible. Treat it right and your UltraLite will provide years of use!

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