Bison STS -40°F sleeping bag with weather-resistant Storm Shield shell, perfect for extreme cold weather.
Close-up of the insulated hood ruff on the Bison STS sleeping bag, designed to retain internal warmth.
Bison STS sleeping bag packed in an ultralight stuff sack, showcasing its portability for mountaineering.
Bison STS -40°F sleeping bag with weather-resistant Storm Shield shell, perfect for extreme cold weather.
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Bison STS Extreme -40°F Down Insulation Sleeping Bag

Original price was: $1,360.00.Current price is: $544.00.

-60%

Designed for extreme mountaineering, the Bison STS -40°F sleeping bag features 850+ fill-power down insulation for maximum warmth.

(3 customer reviews)

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Bison STS -40°F sleeping bag with weather-resistant Storm Shield shell, perfect for extreme cold weather.
Bison STS Extreme -40°F Down Insulation Sleeping Bag
$1,360.00 Original price was: $1,360.00.$544.00Current price is: $544.00.

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Conquer the coldest climates with the Bison STS Extreme -40°F Down Insulation Sleeping Bag. This exceptional sleeping bag is crafted for mountaineers tackling the highest peaks, offering unparalleled warmth with 42 oz. of ethically-sourced 850+ fill-power down insulation.

  • Weather-Resistant Shell: The Storm Shield shell repels harsh winds and moisture while ensuring breathability.
  • Superior Insulation: The 10 inches of heat-trapping loft keeps you warm in temperatures as low as -40°F.
  • Sealed for Warmth: The insulated hood ruff and V-Block side baffles enhance heat retention.
  • Durable Design: Features an abrasion-resistant footbox and interlocking draft tubes to block cold air.
  • Lightweight and Portable: Weighing just 4 lbs. 10 oz., it includes an ultralight stuff sack for easy transport.

Additional information

colors: No selection

PERSIMMON

sizes: No selection

6 FT Left Zip, 6 FT 6 IN Left Zip

3 reviews for Bison STS Extreme -40°F Down Insulation Sleeping Bag

  1. Brandon Brown (verified owner) –

    This sleeping bag is a game changer for winter expeditions! The down insulation keeps me warm even at -40°F. Highly recommend it!

  2. Angela Bond (verified owner) –

    I was skeptical, but the Bison STS truly lives up to its reputation. Lightweight yet incredibly warm. Perfect for mountaineering!

  3. Jose Smith (verified owner) –

    Found the best cold weather sleeping bag for mountaineering! The quality is unmatched, and I love the thoughtful design details.

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FAQs

How to clean the Bison STS -40°F sleeping bag?
To clean your Bison STS sleeping bag, use a front-loading washing machine on a gentle cycle with a mild detergent. Air dry it completely to maintain the down insulation.
What makes the Bison STS the best cold weather sleeping bag for mountaineering?
The Bison STS combines a weather-resistant shell with premium down insulation, providing exceptional warmth and breathability, making it perfect for extreme conditions.
Where can I buy down insulation sleeping bag online?
You can easily buy the Bison STS down insulation sleeping bag online through various outdoor gear retailers, ensuring you have the best equipment for your adventures.
SKU: bison-sts-down-40f-a4b2 Category: Tags: , , , , , , ,

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