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Gear Question

What is 850 + fill down?
Would this...

Posted on

What is 850 + fill down?
Would this sleeping bag be appropriate for moist, raining weather?

Best Answer Responded on

Angus is right. To elaborate a little more, down sleeping bags do not insulate when wet so if there is any chance your sleeping bag will get wet, you do not want a down bag. If most of your trips involve moist, rainy weather, take a look at synthetic insulated bags. They are a lot more bulky than down, but they still insulate and dry quicker when wet.

If you still want a down bag for the benefits of extremely lightweight, comfy, and compact, also buy a waterproof stuff sack to keep it in.

Responded on

It means the down is very light. 850 cubic inches per ounce. And as long as you don't get it wet, it'll be great. It's certainly not waterproof enough to be rained on.

Responded on

linzer, i don't believe your question was answered, you were asking why is there a plus after the 850. I have attached the link to western mountaineering's website with the explanation, but essentially:

their tests often resulted in a higher performance, but conditions aren't always ideal and they don't want to over-report.

http://www.westernmountaineering.com/index.cfm?section=about&page=Product%20Details&ContentId=4#3