The Kelty Cosmic Down 20 is a three-season mummy-style sleeping bag rated to 20°F (-7°C), with an ISO comfort rating of 32°F and ISO limit of 21°F. It uses 550-fill duck down insulation, weighs 2 lb 7 oz in the regular size, fits campers up to 6 ft, and stuffs to 8 x 13 in with the included stuff sack. The 8 x 13 in stuff sack straps to a rear rack or drops into a pannier, making it a practical cold-weather bag for e-bike camping trips.
