@martinsnygg@infosec.exchange Note that these are extreme temperatures, which means that you can survive inside it for 6 hours at that temperature. The brand is "Taurus -1", and it had an extreme temperature of -14 (not 19). A liner or even a summer sleeping bag inside will increase the cold resistance, but it needs to be washed regularly. Same goes for warm clothes. What you need is isolation, air pockets around you and a ground isolation mat underneath. The other sleeping bag is a "Taurus -18", it has an extreme temperature of -39'C. its the size of a medium sized backpack when packed. It's not very heavy, it's just very bulky and cumbersome to bring with you. One simple way to get off the ground is to use a Hammok + a tarp.