Kelty
Cosmic 20 Down Sleeping Bag
Manufacturer list price (MSRP)
$159.95
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Overview
The Cosmic 20 is Kelty long-running value down bag, delivering real 20-degree down warmth at a price that undercuts premium brands. Water-resistant DriDown keeps loft when damp, and the mummy cut with draft tube seals in heat for three-season backpacking.
Specs
- Brand
- Kelty
- Weight
- 1093 g · 38.6 oz
- Temp rating
- 20°F / -7°C — manufacturer's stated rating (Kelty), not independently tested; the maker publishes no ISO 23537 or EN 13537 figure
- Fill
- 550-fill DriDown (water-resistant)
- Shape
- Mummy
- Fill Material Type
- Down
- Item Weight
- 3 pounds
- Material
- Nylon, Poly Taffeta
- Season
- 3-season
- Seasons
- 3 Seasons
- Shell Material:
- 20D Recycled Polyester Taffeta
- Weight G — Source: manufacturer · checked 2026-08-04
Weight vs. category
26% heavier than the category average.
How it measures up
Against every one of the sleeping bags & quilts in the RidgeNote register with a published figure. Manufacturer-listed; sources and dates are on this page.
- Weight
- 2.41 lb (1093 g)
- Lighter than 38% of 24 weighed · #15 lightest
- +18% vs the median 2.04 lb
- Price
- $189.95
- Cheaper than 86% of 29 priced · #3 cheapest
- -48% vs the median $364.00 · $4.93/oz (median $8.20/oz)
- Temperature rating
- 20 °F
- Lower than 42% of 38 rated
- median 20 °F
The lightest of the sleeping bags & quilts on record is Gossamer Gear Cumulus x Gossamer Gear Aerial 330 Sleeping Bag at 11.6 oz — 764 g less for $209.05 more.
The cheapest is Sea to Summit Boab Synthetic Sleeping Bag at $124.00 — $65.95 less and 217 g heavier.
RidgeNote verdict
Similar — lighter or cheaper
Related reading
What Is the Lightest 20 Degree Sleeping Bag in 2026
See how NEMO, Kelty, and Sea to Summit 20 degree bags compare by weight, price per ounce, and rank across the current shelf for 2026.
What's the Lightest Ultralight Sleeping Bag Worth Buying in 2026?
RidgeNote ranks 24 ultralight sleeping bags and quilts by published weight, from 11.6 oz to 72.0 oz, so you know what going lighter costs in ounces.
What Is the Lightest 30 Degree Sleeping Bag in 2026?
See which 30 degree sleeping bags and quilts weigh least, ranked by grams, ounces, and price per ounce across the full shelf.
Manufacturer list price (MSRP)
$159.95