# Cosmic Down 20 Sleeping Bag: specs and price

**Price (US):** $189.95 at kelty.com (MSRP, regular size, per kelty.com), as of 2026-06-27. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 17 sleeping bags we track it is #6 cheapest of 17; category median $200.
**Brand:** Kelty
**Released:** 2024
**Deskmark:** Silver Deskmark — pay-blind category standing 71/100, #4 of 13 in class (independent, computed from sourced data, never for sale).
**Price tracked since:** June 2026

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $189.95 |
| Brand | Kelty |
| Released | 2024 |
| Temperature rating f | 20 |
| Insulation type | down |
| Fill power | 550 |
| Shape | semi-rectangular |
| Packed weight (lb) | 2.44 |
| Packed size | 8 x 13 in |
| Zipper side | right |
| Product note | 550-fill DriDown; ISO comfort 31F, lower limit 21F; regular weight 2 lb 7 oz |

## Where it stands

At $190, the Cosmic Down 20 Sleeping Bag is #5 cheapest of the 17 sleeping bags we track, where the median is $249.95. On the spec sheet, its fill power of 550 is the lowest of the 11, its temperature rating f of 20 is at the median of the 19, and its packed weight of 2.44 lb is at the median of the 13.

## What reviewers say

Two whitelisted hands-on testers (CleverHiker, Switchback Travel) reviewed the Kelty Cosmic Down 20 and both call it a strong-value budget 3-season down bag. Both praise its warmth-to-weight ratio, buttery-soft lining, and low price, and both flag it as heavy and bulky for a backpacking-specific bag while noting the large gap between the women's and unisex versions. CleverHiker's tester observed comfortable warmth to 30F against the 20F spec. All six quotes and the one measured value were verified as literal substrings of the fetched source text. (Based on 2 reviews, 2 lab-tested, 2025-04-23–2026-03-19.)

Praised: Excellent warmth-to-weight ratio and cozy, buttery-soft lining; Strong value / affordable for a down bag; Draft collar/tubes and adjustable hood seal in heat well for 3-season use; Smooth, snag-free zipper and solid, durable build for the price.
Flagged: Heavy and bulky for a backpacking-specific down bag; Large price and weight gap between women's and unisex versions; Narrow mummy fit limits room to spread out; No mesh storage sack included.
Disagreement: Packability is the main split: CleverHiker calls the Cosmic Down the 'smallest of any model on our guide' and praises how small it packs (men's 2 lb 7 oz), while Switchback, testing the heavier women's version (3 lb 2.1 oz), found the 550-fill down 'doesn't compress nearly as well' and rated the packed size bulky at 'just over 13 liters,' roughly two volleyballs.
Sources: CleverHiker (2025-04-23, cleverhiker.com), Switchback Travel (2026-03-19, switchbacktravel.com)

## Frequently asked questions

**What do reviewers say about the Cosmic Down 20 Sleeping Bag?**

Two whitelisted hands-on testers (CleverHiker, Switchback Travel) reviewed the Kelty Cosmic Down 20 and both call it a strong-value budget 3-season down bag. Both praise its warmth-to-weight ratio, buttery-soft lining, and low price, and both flag it as heavy and bulky for a backpacking-specific bag while noting the large gap between the women's and unisex versions. CleverHiker's tester observed comfortable warmth to 30F against the 20F spec. All six quotes and the one measured value were verified as literal substrings of the fetched source text. Praised: Excellent warmth-to-weight ratio and cozy, buttery-soft lining; Strong value / affordable for a down bag; Draft collar/tubes and adjustable hood seal in heat well for 3-season use; Smooth, snag-free zipper and solid, durable build for the price. Flagged: Heavy and bulky for a backpacking-specific down bag; Large price and weight gap between women's and unisex versions; Narrow mummy fit limits room to spread out; No mesh storage sack included. (From 2 tester reviews, 2 lab-tested.)

**How much does the Cosmic Down 20 Sleeping Bag cost?**

The Cosmic Down 20 Sleeping Bag has a US price of $189.95 (MSRP, regular size, per kelty.com), as of 2026-06-20.

**How does the Cosmic Down 20 Sleeping Bag compare on price?**

At $190, the Cosmic Down 20 Sleeping Bag is #5 cheapest of the 17 sleeping bags we track, where the median is $249.95.

**When was the Cosmic Down 20 Sleeping Bag released?**

The Cosmic Down 20 Sleeping Bag was released 2024.

**What are the Cosmic Down 20 Sleeping Bag's key specs?**

Cosmic Down 20 Sleeping Bag (Kelty): temperature rating f 20, insulation type down, fill power 550, shape semi-rectangular, packed weight lb 2.44. Full sourced spec sheet verified 2026-06-20.

Source: https://kelty.com/products/cosmic-down-20 (kelty.com, accessed 2026-06-20)
Corroboration: https://www.switchbacktravel.com/reviews/kelty-cosmic-down (accessed 2026-06-20)
Canonical: https://frontdeskreview.com/product/sleeping-bags/kelty-cosmic-down-20/
Cite: Per The Front Desk Review, the Cosmic Down 20 Sleeping Bag price of record was $189.95 as of 2026-06-20 — https://frontdeskreview.com/product/sleeping-bags/kelty-cosmic-down-20/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl