Western Mountaineering

Western Mountaineering

Bag Expander - Three Season

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The requested quantity for is not available and CAN’T be backordered

Quantity of these goods in a warehouse - 4


Western Mountaineering - Bag Expander - Three Season

Add versatility to your Western Mountaineering sleeping bag with their Three Season Bag Expander. Designed to zip into any mummy-style Western Mountaineering sleeping bag, the expander gives you more elbow room in summer, and more snuggle room for you and a partner when the temps drop in early spring and late fall. Western Mountaineering is all about high-quality down, so they stuffed this bag expander with the same 850-fill-power goose down found in their sleeping bags. The expander works best with 6 foot bags, but will work with any length, with a bit of overlap (most of the length difference between the bags is below the zipper in the feet).
Note: The Bag Expander is designed for use only with Western Mountaineering bags. It may or may not work with other brands.
Like all of Western Mountaineering's sleeping bags, the Bag Expander 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.

International Restrictions Apply

Technical specifications & features

Weight 5.6 oz (168g)
Color Black
Made in USA
Mfg Sku/Part Number BEXTS
Seasonal Usage Three Season
Insulation Goose Down
Fill Weight 850
Bag Shell Material Microfiber
Summer Clearance up to 50% off!

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