Western Mountaineering Alder Sleeping Bag
Best premium sleeping bag for side sleepers seeking spacious warmth.
A spacious, semi-rectangular option that prioritizes comfort over weight savings. It functions as both a traditional bag and a flat comforter, making it perfect for casual campers who want room to move.
$580.00
at
Mountain Crossings
More Alder options
Who it's for
- Campers seeking flexibility between traditional sleeping bags and open quilts
- Ultralight backpackers prioritizing high-quality insulation without the extra bulk
- Outdoor enthusiasts frequently facing damp conditions or high-condensation environments
Who should skip it
- Budget-conscious hikers looking for an entry-level sleeping solution
- Cold sleepers who prefer the enclosed security of a mummy-style hood
- Technical climbers needing maximum thermal efficiency for extreme alpine environments
Performance breakdown
Interior Spaciousness
Semi-rectangular cut eliminates the claustrophobia typical of traditional mummy bags.
Versatility
Opens completely flat to function seamlessly as a camp comforter.
Warmth-to-Weight Ratio
High-quality down fill provides exceptional insulation at a minimal weight.
Couples Compatibility
Full-length zipper allows easy mating with compatible bags for shared sleeping.
Construction Quality
Premium American craftsmanship ensures long-term durability and consistent loft retention.
Temperature Regulation
Ideal for mild conditions, though lacks the seal of technical mummy bags.
Key Specs
Temperature Rating
25° F
Weight
1.94 lbs
Down Fill
16 oz
Shape
Semi-rectangular
Shoulder Girth
62 inches
Foot Girth
46 inches
Loft
5 inches
Baffle Spacing
5.25 inches
Zipper Location
Side
Country of Origin
USA
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