Help to ID this WWII? US Army sleeping bag

[Phantomfixer]

I picked this up today. A very heavy rectangle shaped sleeping bag. Bag is made by Alaskan Sleeping Bag Co., the tag is the standard white tag with washed out ink, all except the Alaskan Sleeping Bag Company at the top....the inner pad is shredded latex foam...see pic.
The pics are from the middle of the bag up. The zipper is a crown mil spec zipper found on bags from WWII.
There is a flap at the head position with draw strings on the left and right side. Maybe a pillow, when folded over and stuffed with a blanket? Or maybe a rain hood, I folded the flap over the top of the bag...
Anyone ever seen one of these guys? it might be civilian, but it came stuffed inside a WWII duffel bag named to Lt Martin

 

[a2jacketpatches]

Pretty sure that's a civy

 

[foster]

I agree, civilian or private purchase.

 

[Phantomfixer]

yep leaning that way too. The sleeping pad for sure. The bag is super warm. Very roomy. I think the flap at the top could be a rain flap, but more likely a built in storage cover. Will put it in an officers bed roll, I use for camping....

 

[Phantomfixer]

My guess after doing some digging..it most likely is a civilian bag based on the M-1940 bag...but with the washed out tag????

http://www.usmilitariaforum.com/forums/ ... eping-bag/

Mine is identical in shape and style but does not have the snaps all the way around nor a rubberized bottom