In order to sleep well in the outdoors, your body needs help keeping its heat while you are resting. A sleeping bag protects against the cold by creating an insulating layer of air around you. The sleeping bag itself does not generate any heat - you and your body warm the air inside. The purpose of the sleeping bag is to keep the heat inside and act as a barrier against the cold. In other words, all sleeping bags are equally cold – what separates them is their ability to insulate.
We have gathered here information that can be good to know about sleeping bags – both before a purchase and before heading out into the outdoors.