This is a -40° Feathered Friends sleeping bag. Remember C and F are the same at -40°.
Specs:
http://featheredfriends.com/down-sleeping-bags/expedition/mummy.htmlWeighs 4 pounds 4 oz on my scale.
Used on one McGrath Iditasport bike ride and 4 or 5 over nights. Always stored dry, always stored hanging up and never stored in a stuff sack.
$800. Which is a deal. Please don't offer $500. Black on the inside, dark blue on the outside, right hand zipper. I'm 5'8" and 155# and it fits me and boot liners, inner gloves, chocolate, water bottles, etc with tons of room to spare.
In Anchorage, AK. Shipping somewhere is fine.