3-Season Sleeping bags
The importance of a correctly temperate sleeping bag.
It is almost as important to choose a sleeping bag that is not too warm as it is choosing one that is not too cold. When you are warm your body will produce more moisture vapour that will need to escape from the sleeping bag. The fabrics used in our sleeping bags are as thin as possible to have good moisture vapour transmission. All insulation options used in our sleeping bags have non-moisture absorbing properties but instead allow the moisture to pass out to condense on the outside of the bag. It is therefore positive if the outer fabric of the sleeping bag is humid or even frosty when you wake up. This is an indication that the insulation and/or fabric have not prevented transport of the moisture you have produced during the night.