The Selk'Bag2 is lighter in weight, slightly higher in extreme temperature, and more comfortable than the Selk'Bag1. This would be the best option for those frequent campers who would like a good extreme temperature sleeping bag with an equal comfortablity factor. The Selk'Bag2 is more comfortable than the Selk'Bag1.

Please Note: It is not recommended for use in the Extreme temperature range, this is merely a guide.

Extreme: Lower extreme temperature where the risk of health damage by hypothermia occurs not feeling cold (related to standard man and in standard conditions of use).
Limit: Lower limit of which a sleeping bag user with a rolled-up body posture is globally in thermal equilibrium and just not feeling cold (related to standard man and in standard conditions of use).
Comfort: Lower limit of the comfort range down to which a sleeping bag user with a relaxed posture such as lying on the back is globally in equilibrium an just not feeling cold (related to standard woman and in standard condition of use).