# Cat's Meow 20 Eco Sleeping Bag vs Spark SpII Ultralight Down Sleeping Bag: specs and price compared

A sourced, side-by-side comparison of the Cat's Meow 20 Eco Sleeping Bag (The North Face) and Spark SpII Ultralight Down Sleeping Bag (Sea to Summit) among sleeping bags. Cat's Meow 20 Eco Sleeping Bag is the cheaper of the two at $200.

## Side by side

| Spec | Cat's Meow 20 Eco Sleeping Bag | Spark SpII Ultralight Down Sleeping Bag |
| --- | --- | --- |
| US price | $200 | $409 |
| Brand | The North Face | Sea to Summit |
| Temperature rating f | 20 | 28 |
| Insulation type | synthetic | down |
| Fill power | — | 850 |
| Shape | mummy | mummy |
| Packed weight (lb) | 2.71 | 1.17 |
| Packed size | 10 x 18 in | 2.5 L (approx. 1-liter bottle size) |
| Zipper side | — | — |
| Product note | Heatseeker Eco recycled synthetic insulation; ISO comfort 30F, lower limit 21F; pad-attachment system; regular weight 1,231 g | Lower limit 28F / -2C; comfort 38F / 4C; Ultra-Dry Down PFAS-free treatment; regular size; 530 g / 18.7 oz |

## Key differences

- Temperature rating f: Cat's Meow 20 Eco Sleeping Bag 20 vs Spark SpII Ultralight Down Sleeping Bag 28
- Insulation type: Cat's Meow 20 Eco Sleeping Bag synthetic vs Spark SpII Ultralight Down Sleeping Bag down
- Packed weight (lb): Cat's Meow 20 Eco Sleeping Bag 2.71 vs Spark SpII Ultralight Down Sleeping Bag 1.17
- Packed size: Cat's Meow 20 Eco Sleeping Bag 10 x 18 in vs Spark SpII Ultralight Down Sleeping Bag 2.5 L (approx. 1-liter bottle size)
- Product note: Cat's Meow 20 Eco Sleeping Bag Heatseeker Eco recycled synthetic insulation; ISO comfort 30F, lower limit 21F; pad-attachment system; regular weight 1,231 g vs Spark SpII Ultralight Down Sleeping Bag Lower limit 28F / -2C; comfort 38F / 4C; Ultra-Dry Down PFAS-free treatment; regular size; 530 g / 18.7 oz

## Sources

- Cat's Meow 20 Eco Sleeping Bag: https://www.rei.com/product/244004/the-north-face-cats-meow-20-eco-sleeping-bag (rei.com, verified 2026-06-20)
- Spark SpII Ultralight Down Sleeping Bag: https://www.advnture.com/reviews/sea-to-summit-spark-spii-sleeping-bag (advnture.com, verified 2026-06-20)

Canonical: https://frontdeskreview.com/gear/sleeping-bags/the-north-face-cats-meow-20-eco-vs-sea-to-summit-spark-spii/
Cite: Per The Front Desk Review, Cat's Meow 20 Eco Sleeping Bag ($200) vs Spark SpII Ultralight Down Sleeping Bag ($409) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/sleeping-bags/the-north-face-cats-meow-20-eco-vs-sea-to-summit-spark-spii/
License: CC BY 4.0.