Three-Season Sleeping Bags
A three season sleeping bag is a true all-rounder. One bag is enough to take you from spring to fall!
In Nordic countries most users choose a bag with an extreme rating of -15 degrees. A bag like this will give most users sleeping comfort at temperatures around 0 degrees centigrade or a bit above. Three season bags are made both with and without insulated collars. Going for the collar-free version is a good choice when looking for an ultra light option and you’re not expecting cold nights.
Down is still unbeatable when it comes to warmth to weight ratio. Synthetic fibers have their advantages: they are less sensitive to moisture and they are much cheaper.
It is wise to store your sleeping bag outside its packing bag - this way the insulation material will stay in good shape!