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This product is no longer available, but don't go just yet.


  • Soft, high-loft 550-fill-power duck down insulation provides exceptional warmth and light weight
  • Baffle construction with differential cut eliminates cold spots; inner layer is cut smaller than the outer layer to create consistent thickness of insulation
  • Polyester taffeta creates a smooth yet durable shell; polyester taffeta lining breathes for comfort and feels great against skin
  • Top baffle draft collar drapes comfortably over neck and shoulders, sealing out drafts
  • Formfitting hood has drawcords of differing widths at head and neck for easy identification and adjustment in the dark
  • Ground-level side seam keeps draft tube in place, further helping prevent cold air from seeping through the 2-way, locking zipper
  • Internal loops provide attachment for a liner (sold separately) to increase the warmth of the bag
  • Pad loops provide attachment points to keep your sleeping bag and pad together, so you needn't worry about rolling onto the cold, hard ground (straps sold separately)
  • Hang loops allow easy drying and storage
  • Kelty Cosmic Down 4°F sleeping bag comes with a stuff sack


View all Kelty Men's Sleeping Bags

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Best Use Backpacking
EN Lower Limit 4 degrees Fahrenheit
EN Comfort 17 degrees Fahrenheit
Temperature Rating (F) 4 degrees Fahrenheit
Temperature Rating (C) -16 degrees Celsius
Weight 3 lbs. 12 oz. / 3 lbs. 15 oz.
Shell Polyester taffeta
Insulation Type Down
Fill 550-fill duck down
Fill Weight 39 / 42 ounces
Lining Polyester taffeta
Sleeping Bag Shape Mummy
Fits Up To (in.) 72 / 78 inches
Shoulder Girth (in.) 62 / 64 inches
Stuff Sack Size 9 x 17 inches
Stuff Sack Volume 18 liter
Gender Unisex
Weight - Metric 1.68 / 1.76 kilograms