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Western Mountaineering Cypress GWS Expedition

Western Mountaineering Cypress GWS Expedition

by Western Mountaineering

2210 g Total Weight
850 Fill Power
Western Mountaineering Brand

Description

The Western Mountaineering Cypress GWS Expedition is the heaviest bag in the lineup and carries the most down of any of them — 1415 g of 850+ fill power goose down for a total weight of 2210 g. Its manufacturer-rated limit of -34°C puts it alongside the Bison GWS Expedition among the warmest expedition bags on offer. Box-baffle construction with a differential cut keeps the down evenly distributed under sustained loft, while the Gore Infinium (GORE WINDSTOPPER) shell adds a waterproof, windproof membrane that matters most on exposed high-altitude bivouacs. An insulated draft collar, draft tube, and fitted, adjustable hood cover the neck and head, and the dual-slider zipper makes venting or a quick exit easier. Worth noting: the package doesn't include a compression stuff sack, only a storage sack for long-term keeping, so budget for a separate compression sack. This is clearly specialized gear for the harshest winter expeditions, not an all-purpose three-season bag. Made in the USA, sized for users up to 182 cm.

Specifications

Limit Temperature
-34 °C
Temperature Rating Standard
Manufacturer rated
Season Rating
5-season (expedition)
Total Weight
2210 g (4.87 lb)
Fill Weight
1415 g (3.12 lb)
Packed Size ( Length x Diameter )
56 x 28 (1.8 x 11.0 ft)
Insulation Type
Goose down
Fill Power
850
Fill Power Standard
US standard
Shape
Mummy
Baffle Construction
Box baffle
Baffle Orientation
Horizontal
Differential Cut
Zipper Side
Right
Zipper Length
Full length
Two-Way Zipper
Shell Fabric
Gore Infinium (GORE WINDSTOPPER)
Water Resistance
Waterproof/breathable membrane
Draft Collar
Draft Tube
Adjustable Hood
Hood Type
Fitted/contoured
Storage Sack Included
Size Category
Regular
Maximum User Height
182 cm (6.0 ft)
Gender-Specific Fit
Unisex
Country of Manufacture
USA
Warmth-to-Weight Ratio f(x)
15.4 °C/kg
Fill Efficiency f(x)
2.4 °C/100g
Weight per Degree f(x)
65 g/°C
Bag Type
Mummy sleeping bag

Where to buy

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Category context Sleeping Bags (417 products)

Weight
Expedition weight· mainstream zone 819–1420 g· ranked 400 of 418

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