I suppose I could research your four specs, but so can you, so therefore I won't.
I'll say to others that I have used rectangular LL Bean 20 degree, DOWN, sleeping bags for 35 years for all my canoe, kayak and car camping. I still have my original bag, with some seamstress patches, which I now use as a comforter on my bed. My second one, about 8 years old, still looks new.
These bags pack down sufficiently to get through the 6" hatches on my outrigger canoe, and I have NEVER gotten the down bags soaked in all those years. (Well, once a little soaked when I left my tent door open during a rain while I was chewing the fat under a tarp.)
The outer layer fibers they use on many down bags these days is pretty water resistant.
Rescue / Throw Bags
Cartop Kayak Carriers
Kayak & Canoe Outriggers
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