Kelty Cosmic 40 Degrees Sleeping Bag


Kelty Cosmic 40 Degrees Sleeping Bag

When the trail is beckoning, you’ll be well prepared with the lightweight Cosmic down 40°F sleeping bag. Newly restyled for 2016 with 600-fill hydrophobic DriDown™, this bag ensures comfort in warmer weather adventures and dryness thanks to revolutionary down that resists water and condensation. With features like quilt-through construction and a rugged down proof polyester ripstop shell, it’s hard not to experience more joy every night.


  • 50D polyester taffeta liner
  • 50D Down Proof Polyester Ripstop shell
  • 600 fill power DriDown™
  • 60 in. dual-slider, locking zipper
  • Draft collar
  • Quilt through construction
  • Stuff sack included
  • Thermal-comfort hood and natural fit footbox
  • Zipper draft tube with antisnag design


  • Temp Rating: 40° / 4°C
  • EN Lower Limit Rating: 40° F / 4° C
  • Shell material:50D Polyester Ripstop
  • Liner material:50D Polyester Taffeta

Size Regular:

  • Fits to: 6 ft / 183 cm                  
  • Fill weight: 10 oz. / .288 kg
  • Total weight: 1 lb. 15 oz / .878 kg
  • Stuffed size: 7 x 12 in / 18 x 30 cm

Size Long:

  • Fits to: 6 ft 6 in / 198 cm
  • Fill weight: 11 oz. / .316 kg
  • Total weight: 2 lbs. 1 oz. / .936 g
  • Stuffed size: 7 x 12 in / 18 x 30 cm
  • Insulation:600 fill power DriDown™

Customer Reviews

Based on 1 review
Great for the money. No other quality down bag near this price point.

This is a great bag that lofts well and holds up to its 40f claim. Just a couple items of note. This is a 600 fill bag but the draft guard and the bottom of the foot box are synthetic. The tag claims 75% down minimum to 25% feather but to feel it I'd say it's a little higher, which is a good thing. Wish that the 75% was advertised somewhere prior to purchase, would've liked a higher target.

Only questionable thing is tag claims the fill weight is 10.2 ounces but the Kelty website says 12 ounces. Don't think it should be an issue but idk what Kelty is doing there. I also wonder if the 10.2 ounces includes the synthetic fill or is just the down, the bag doesn't specify. Would've liked that almost two additional ounces of down.

For the price you won't find better for late spring through early fall camping. Don't forget that Kelty also has a pretty broad lifetime warranty.