One more item you could acquire is a sleeping bag liner. These offer extra heat on cold evenings, as well as can likewise be gotten rid of and washed, conserving your sleeping bag from the regular damage.
There are some sacrifices though in opting for a bag that supplies all that space to move. The most significant possibly being your home heating capacities and heat scores. See, while having all that space is nice, much like having a big house with tall ceilings it takes a great deal even more to heat the within. The added room requires more effort to keep cozy and also for that reason, isn't really as efficient for shutting out the cold as a mummy bag is. Obviously having said that, the pyjamas you prefer to oversleep can aid make up for the heat differences between the bags also ... approximately particular temperature levels. Suffice to claim that artic temps could call for more than a teddy or set of boxers.
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.