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Product Description
Great for ultralight outings where every ounce counts, the Zerogram Tuolumne SUL sleeping bag helps you save space and weight without skimping on warmth. Made of soft Pertex Quantum GL 7d fabric, the bag is stuffed with lofty 850-fill-power Polish white goose down that’s rated to keep you warm below 20 degrees Fahrenheit Read More
How is this rated to the temps listed? I just compared this to a zpacks bag and it has nearly half the fill of lower quality fill at the same temp rating? Also it seems to be longer than the extra long zpack options with zerogram stating a 190cm length? Maybe we can have some better specifications?
SunCityJonYes I agree it seems like a crappy prospect - perhaps worth buying if you want to boost it with a down jacket but then there are cheaper bags with the same warmth....
P_J_NAlso EN ratings are for sleeping bags, not quilts. So they'd need to supply some sort of hood for the test and mention that in the description here (Enlightened Equipment did that once for one of their quilts). I think you're right, I'm calling foul!
Sleeping bag temp ratings (in marketing material like here) is an area that should be scrutinized way more as it could potentially be life threatening if incorrect.
I wish someone from mass drop would chime in.
I have been kinda waiting for a Zpack bag to come up but this one is intriguing. There are a grand total of zero English reviews I can find though. Would definitely be taking a bit of a flyer on this one.