• Online:
  • URL for this product:
  • From the U.S. and CanadaCall 1-800-426-4840
  • Mon. through Sun., 4 a.m. through 11 p.m. PT.
  • InternationalCall 1-253-891-2500
  • Mon. through Sun., 4 a.m. through 11 p.m. PT. English language only.
Kelty Cosmic Down 41 Sleeping Bag


    Kelty Cosmic Down 41 Sleeping Bag

    Snuggle up in the Kelty Cosmic Down 41 Sleeping Bag in conditions ranging from a cool spring morning to a brisk fall night. The Cosmic Down 41 provides exceptional warmth at a great price. See details

    • $129.95 - $149.95

    Item # 847648

    Snuggle up in the Kelty Cosmic Down 41 Sleeping Bag in conditions ranging from a cool spring morning to a brisk fall night. The Cosmic Down 41 provides exceptional warmth at a great price.

    Product size and color
    * Color/Size is out of stock but can be backordered.

    Snuggle up in the Kelty Cosmic Down 41 Sleeping Bag in conditions ranging from a cool spring morning to a brisk fall night. The Cosmic Down 41 provides exceptional warmth at a great price.

    • 100% Satisfaction Guaranteed
    • Gear and Advice You Can Trust

    This item ships for free! Learn more

    To view videos or use the zoom feature on REI's websites, please download the latest version of Adobe Flash Player.


    Snuggle up in the Kelty Cosmic Down 41 Sleeping Bag in conditions ranging from a cool spring morning to a brisk fall night. The Cosmic Down 41 provides exceptional warmth at a great price.

    • 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
    • Formfitting hood has drawcords of differing widths at head and neck for easy identification and adjustment in the dark
    • Ground-level side seam helps 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 41°F sleeping bag comes with a stuff sack


    Item 847648

    Members: earn a
    $20 bonus card

    When you spend $100 April 14—29

    Single-use bonus card redeemable by
    REI members MAY 2—12, 2014.

    Not a member? Join Now!
    Add to Cart

    REI Membership

    Related items

    View specs for sizes: Long Right, Regular Right

    Kelty Cosmic Down 41 Sleeping Bag Specs
    Long RightRegular Right
    Best use
    41 degrees Fahrenheit41 degrees Fahrenheit
    49 degrees Fahrenheit49 degrees Fahrenheit
    41 degrees Fahrenheit41 degrees Fahrenheit
    4 degrees Celsius4 degrees Celsius
    1 lb. 14 oz.1 lb. 12 oz.
    0.87 kilogram0.8 kilogram
    Polyester taffetaPolyester taffeta
    550-fill duck down550-fill duck down
    13 ounces12 ounces
    Polyester taffetaPolyester taffeta
    78 inches72 inches
    64 inches62 inches
    58 inches58 inches
    7 x 11 inches7 x 11 inches
    8 liters8 liters
    7.9 liters6.2 liters
    EN lower limit (rating for men)
    EN comfort (rating for women)
    Temperature rating (F)
    Temperature rating (C)
    Weight - metric
    Insulation type
    Fill weight
    Sleeping bag shape
    Fits up to (in.)
    Shoulder girth (in.)
    Hip girth (in.)
    Stuff sack size
    Stuff sack volume
    Compressed volume

    Kelty Cosmic Down 41 Sleeping Bag

    Loading Ratings & Reviews...

    Kelty Cosmic Down 41 Sleeping Bagis rated4.0out of5by10.
    Rated5out of5byfromVery Happy with My new KeltyI will use this product on all my hiking and Backpack trips.I like all the features so far.I honestly don't have any complaints yet because I only used it once.
    Date published: 2014-02-20
    Rated4out of5byfromKelty Cosmic Down 41 sleeping bagHow comfortable a person is depends on a variety of factors. I have a 3-season shelter as well as an insulated air mat which probably helps in staying warm. Under those factors, and even though findings show that women are "cold sleepers", the Kelty Cosmic down 41 degree rated sleeping bag seemed to perform in the expected range for me. The test for this bag's lower comfort range was during an early October wilderness trip for one night when the morning temperature was 40 degrees in the tent. In preparation for a chilly night I did bring along a sleeping bag liner, but the Kelty bag along with mid-weight long underwear was enough to keep me warm until about 5:00am, which then I added the liner. The Kelty Cosmic down 41 by itself is strictly a 1-season bag. The fact that it's lightweight and compressible was very attractive for me as the main features. I even managed to get it into a 5-liter stuff sack, allowing more room in my pack. The retail price is affordable, avoiding an insane triple digit figure of a premium bag. The only mark against this sleeping bag is that its "down-proof-ness" is not very good, so expect to have little white plumes on your clothes. All though, you can't expect too much from an economy sleeping bag, and I also read that down-proof-ness", or lack of, probably won't noticeably affect the overall warmth performance.
    Date published: 2014-02-10
    Rated5out of5byfromPerfect Spring/Summer BagVery light weight bag, packs small, and for a great price. I have used this bag on several backpacking trips this summer in Northern California in night time temperatures ranging (40-60F). I am a hot sleeper and found this bag to be very warm in those conditions. Most nights I unzip the bag. Based off of my experiences I will continue to use the bag this fall.
    Date published: 2013-09-21
    Rated4out of5byfromVery nice bagI tried this bag out in 40 degree weather while tent camping.... Unfortunately, that trip was also cut short because of heavy rains, which is not something this bag is cut out for. As long as you're high and dry, this bag is great. I would recommend a pad of some sort underneath... The ground was awfully hard that night.
    Date published: 2013-09-01
    Rated4out of5byfromGreat 3-season light weight bagBought and used for GCNP Backcountry / SW CO trip last week of July '13. Temperature rating spot on. Regular is tight for me (5'10, 190lb) but workable. Small and light.
    Date published: 2013-08-14
    Rated4out of5byfromLighweight. Seems warmHaven't used it in any cold weather yet, but I like how small and light this sleeping bag is. So far, I've done one overnight with it and it seemed fairly warm. I overheated a little, but it is summer time, so I expected that.
    Date published: 2013-06-26
    Rated4out of5byfromGood piece of gearGood sleeping bag. I bought the long version, being 6-2. It was long enough and I didnt feel restricted in any sort. The temp rating is pretty accurate. I tend to be warmer than others, but I stayed pretty comfortable in this bag inside a tent with rain, heavy wind, and 40 degrees outside. 4 stars in my book. It would get the 5th star if it were cheaper.
    Date published: 2013-06-03
    Rated1out of5byfromDidn't keep me warmI brought this sleeping bag on one of my backpacking trips, and it didn't keep me warm.
    Date published: 2013-06-03

    Ask a question and have it answered by REI product experts and fellow outdoor enthusiasts. Need immediate assistance? Use Live Help.

    Loading Questions & Answers...

    How are we doing? Give us feedback on this page.

    FREE SHIPPING With $50 minimum purchase

    MEMBERS, EARN A $20 BONUS CARD! When you spend $100 April 14-29. Single-use bonus card redeemable May 2-12. Details
    • Join REI today!
    • REI Membership
    • REI member benefits include an annual refund (typically 10% on eligible purchases).
    • Join REI today!
    • Sign up for REI Gearmail®
    • and get 15% off selected items!
    • Store Locator
    • Locate an REI store near you.
    • Find a Store
    © 2014 Recreational Equipment, Inc. All rights reserved. REI, the REI Tree and Mountain design, Novara, and
    REI Adventures are trademarks of Recreational Equipment, Inc.

    Find REI on: FacebookTwitterYouTubeFlickrMobile site