Converting a bag to a UQ?

[Matt-138]

The survival tube is more sophisticated than the Stansport bag. I buy my tubes at www.ps-med.com. Tube info can be found at www.blizzardsurvival.com. Order the green tubes, not the bags.

How long does the bag last? Is it easy to repack and reuse? Thanks

[CamoDeafie82]

I realize it's not ideal; but I've got this rectangle Coleman sleeping bag with poly fill....it says rated down to 40 degrees; and it has those toggles and loops on the sides; also has a 2nd zipper at the foot end, so would it be possible in theory, for summer time, to use it as a pea pod with minimal modifications, and for colder weather, zip it up and hang it by the toggles and loops on the bottom, effectively doubled up on the bottom? I am still looking for down pillows and such for my integrated insulated bridge design