Which weight of sleeping bag?

[MrNoodly]

A peice of reflextix 1/4 the diameter of my pinky finger is R24-32 depending on how you use it. Last winter was harsh here in the east. I only needed to turn my heater on two times the whole winter.

?????

https://www.thespruce.com/is-reflectix-foil-considered-real-insulation-1821923