Selecting Sleeping Bags Sleeping bags fall into three basic categories: Summer Three-season Winter Summer: Summer bags are suitable for temperatures of about 1 degrees C (30 degrees F)and higher. They’re lightweight (because less insulation means less weight), and they pack down tiny (often smaller than a football). Summer bags often have full-length zippers, which allow you to open them wide to ventilate when the nights are really hot. Three-Season Ideal for temperatures of about -5 degrees C (20 degrees F) and above, these bags are best suited for spring and autumn trips, as well as summers in mountains, when temperatures can dip below freezing at night. Winter These bags are … Continue reading Selecting Sleeping Bags