The ideal way to pick a cozy enough bag is to go with one that handles a 10 degree colder climate than exactly what you're anticipating to be resting in. The last most significant consideration in selecting a bag is the insulation that is made use of in that bag.
If you are in the mountains and also only plan to trek Fall, summer and spring, after that obtain a 3 season resting bag. (Example: claim that the average reduced in the mountains throughout the spring is 20 levels Fahrenheit, after that take away 20 degrees and look for a sleeping bag that's ranked at 0 degrees. Draft Collar: This is a tube at the base of the hood. It "closes" off the area at the neck so that air doesn't get away. When experimenting with a bag, see to it that this tube is comfortable.
The last greatest factor to consider in selecting a bag is the insulation that is used in that bag. While both will do the work to maintain you warm, they both have their pros as well as cons. Some kind of extra padding under the bag is very advised.