How do 0 degree sleeping bags work?
Im looking at buying a 0 degree sleeping bag and I would like to know how they work. In general, how does a sleeping bag that keeps you warm in 0 degree weather let you breath and be cool in 100 degree weather? Please explain to the best of your knowledge. Thanks
They can’t do both. Sleeping bags are rated for a range of temp. Very low temp bags just trap your body heat with high tech insulation and seal without exposed zippers to let the heat out. They also wrap tight around your face, basically a good mummy bag. They will be very much uncomfortable at warmer temp.
Bags for warm temps have less/lower tech insulation, exposed zippers, open tops to get in and out easier etc.
The North Face Superlight 0 Degree Sleeping Bag -Episode 161