Yeti Fever Zero Down Sleeping Bag

+12°C Comfort Limit (EN13537:2012), 110g of 950+ Fill Power Down (US Method)
Weighs 280g
Code: SS14427V
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Yeti's Fever Zero bag delivers uncompromising quality and dedication to minimising weight, it achieves this by using the lightest possible material and the highest quality down.

Yeti says:

Created for people who do not compromise; who climb mountains just because they can; who want to be ready to move to the next destination without spending time packing; who are curios about K2 as well as a colourful beetle in the forest floor; who do not want to check in too much luggage at the airport; who think that life is one big dish ready to be consumed; who are curious of what lies waiting round the corner; and the next.

Yeti's Fever Zero is an amazing bag, it has 10% more down in it than the Passion One bag and yet it weighs less and achieves the same Comfort Limit rating. Despite it weighing just 280grams it still has a boxed foot, short zip and hood. The pack size is out of this world.

- Reviewed by Ultralight Outdoor Gear

Help and advice:Choosing a sleeping bag adviceEN 13537 rating for sleeping bags explainedAll about down filling in sleeping bags
Sleeping bag shape and sizes adviceSleeping Bag features Page 1Sleepin bag features page 2
  • Extreme lightweight and ultra compact sleeping bag
  • The lightest downproof fabric in the world
  • Half zip
  • Silk feel
  • Breathable
  • Water repellent fabric
  • Lightweight YKK zipper no.3
  • EN13537 2012 Rating: Comfort +15°C, Limit +12°C, Extreme -1°C
  • Lining: Next to nothing 2.0 (100% Nylon)
  • Size: 225 x 83 x 54 cm (L), when packed: 11 x 18 cm
  • Weight: 280g
  • Filling: 110g
  • 900+ (EU method) cuin Pure White Goose Down - Class 1, (US Standard: around 950+ cuin)


EN13537:2012 - Look for the 2012 label for the most accurate rating; In 2012 the EN system of testing sleeping bags was re-vamped - the new testing procedures are more rigorous, producing more consistent results than previous tests. 2012 results tend to rate sleeping bags as poorer performing by a few degrees when compared to previous test results, even though the sleeping bag may be identical, or even better.

This means that comparison between an EN13537:2012 rated bag and an EN13537:2002 rated bag are particularly difficult - our advice is to use the new EN13537:2012 rating to compare with other bags who have also been rated in this way.

Showing our 1 review for Yeti Fever Zero Down Sleeping Bag. Write a review ›
Review Summary - 5 out of 5 based on 1 rating.
September 24, 2016 | Sam

I have used this bag for a mix of activities - camping in the summer and also when ski touring in the winter. It is really light and unlike so many products does pack into the supplied bag. In mountain huts, I always get cold and find the normal silk liners uncomfortable. As long as the outside temperature is not too low, I can sleep really deeply in this bag. It is rated at 12 degrees but I think it is good to a bit colder than that.