Western Mountaineering
Bison Gws
Sold by the people who make it — no third-party seller in between.
RidgeNote is reader-supported: if you buy through the retailer links below, we may earn an affiliate commission at no extra cost to you. As an Amazon Associate I earn from qualifying purchases.
Manufacturer list price (MSRP) — 60-180-cm / left
$1,400.00
Retailer prices change, so we show the manufacturer list price for each version and link out for you to check the current price.
Overview
Bison GWS – Gore Infinium™ Extreme Expedition Sleeping Bag Denali to Aconcagua to the Himalaya, the Bison GWS is built for the most extreme mountaineering conditions on Earth—places where failure is not an option. Trusted by professional climbers and polar explorers, this bag delivers life-saving warmth and protection in the coldest, harshest environments imaginable. With 42 oz.
Specs
- Brand
- Western Mountaineering
- Weight
- 0 g · 0.0 oz
- Temp rating
- -40°f (manufacturer rating)
- Fill
- 850+ power goose down
- Shape
- mummy (w/ full collar)
Weight vs. category
100% lighter than the category average.
RidgeNote verdict
Similar — lighter or cheaper
Related reading
The Complete Beginner Backpacking Gear List
Everything you actually need for your first overnight, from our own catalogue — with the honest budget math and where to buy it.
Best Lightweight Backpacking Tents (2026)
The eight shelters in our catalogue, ranked by published weight, floor area, and list price — with an honest reason to skip every one of them.
Best Sleeping Pads for Backpacking 2026
Fourteen pads from R 1.3 to R 7.7, compared on the manufacturers’ published insulation and weight figures — air, self-inflating, and foam, with a reason to skip each.
Manufacturer list price (MSRP)
from $1,400.00