Kelty Cosmic Synthetic Sleeping Bag—lightweight, cozy warmth for three-season adventures
What Our Gearhead® Experts Are Saying:
"This bag strikes the perfect balance of comfort, weight, and durability. The roomy foot box is a game-changer for tired feet, and the eco-friendly insulation keeps me warm without adding bulk. Plus, it packs down small, making it easy to bring along for all my three-season trips."
The Kelty Cosmic 40°F Sleeping Bag is our ticket to restful nights under the stars. Engineered for three-season comfort, this mummy-style bag is crafted with recycled CirroLoft ECO insulation, delivering lightweight, compressible warmth that doesn´t weigh us down. Its buttery-soft recycled nylon shell is treated for eco-friendly water resistance, and the silky taffeta liner adds a touch of luxury to every night in the backcountry. The bag features an offset quilt construction to eliminate cold spots, a contoured hood for a snug fit, and an expanded foot box for extra room to stretch and wiggle our toes. Thoughtful details like a zippered internal stash pocket and anti-snag sliders ensure convenience on the trail.
Details
- Lightweight, compressible mummy bag for three-season camping
- CirroLoft ECO insulation provides warmth using recycled fibers
- Recycled 20D nylon shell with eco-friendly DWR for light weather defense
- Offset quilt construction minimizes cold spots for consistent warmth
- Roomy foot box gives extra wiggle space for added comfort
- Contoured hood with insulated tube ensures a natural, cozy fit
- Zippered internal stash pocket keeps essentials close at hand
- Includes compression stuff sack for easy packing and transport
- Item #KELO0DL
Tech Specs
- Responsible Collection
- Recycled/Repurposed
- Material
- 20D nylon, PFAS-free DWR treatment
- Insulation
- CirroLoft Eco (100% recycled synthetic)
- Shape
- mummy
- Zipper
- full-length
- Max User Height
- [regular] 6ft, [long] 6ft 6in
- Shoulder Circumference
- [regular] 62.2in, [long] 64.2in
- Draft Tube
- yes
- Pockets
- [internal] 1 zippered stash
- Pad Retainer
- no
- Fill Weight
- [regular] 21.1oz (598g), [long] 23.5oz (667g)
- Degree
- 40°F
- Stuff Sack
- compression stuff sack included
- Stuff Size
- 17 x 8in
- Claimed Weight
- [regular] 2lb 40z, [long] 2lb 8oz
- Activity
- backpacking, weekend camping
- Manufacturer Warranty
- limited lifetime













1. Your order is usually shipped out within 24-48 hours after your payment is received.
2. The tracking number of your parcel will be sent to you after your order is despatched. You may use the tracking number to check the status of your order online.
3. The shipping fee will be auto-added in the grand total when you send payment.