There are primarily two types of sleeping bags. One is the mommy bag and the various other is the "traditional" rectangle-shaped resting bag. Currently mind you, ain't nothing incorrect with old school in any way. It might be your preference once you uncover just what it's like verses the mommy bag.
If you see a +20 degree score that would certainly indicate that the bag should be cozy enough for temperatures that are 20 levels or warmer.. And if you see a - 20 level score then it has actually been figured out that the bag needs to be cozy sufficient for minus 20 degree climate.
The Europeans have had a screening framework, for a while currently, that has shown to be reliable in how it establishes a resting bag's temperature level array. It likewise provides even more details by acknowledging the matter that males and females have diverse viewpoints to exactly what is a comfy sleeping temperature level.