When you are sleeping outdoors and don’t have control of the temperature, having a sleeping bag that fits you properly and has an appropriate temperature rating for the climate you are in can be vital. Today we have a really good video form Back Country Edge that explains everything you need to know about different types of sleeping bags, and how to understand the many different types of temperature ratings. In addition there is another short video form several different sleeping bag manufacturers explaining the features of their unique brands of sleeping bags. Hope these are helpful to you when choosing your next sleeping bag. -Cheers!