Katabatic Flex 22 Quilt vs Sea to Summit Ember 30 Quilt
In short: The Katabatic Flex 22 Quilt costs $5 less; the Katabatic Flex 22 Quilt is rated 17 °F colder on the figure each maker publishes; the Sea to Summit Ember 30 Quilt saves 4.7 oz; only the Sea to Summit Ember 30 Quilt publishes a lab temperature rating at all.
| Spec | Katabatic Flex 22 Quilt | Sea to Summit Ember 30 Quilt |
|---|---|---|
| Approx. price | ~$409 | ~$414 |
| ISO comfort | not published | 39 °F |
| ISO limit | not published | 30 °F |
| Rating on the label | 22 °F | 30 °F |
| Honesty gap | — | 9 °F |
| Rating standard | manufacturer | ISO 23537 |
| Weight | 1 lb 7.9 oz | 1 lb 3.2 oz |
| Warmth per ounce | — | 1.09 °F/oz |
| Fill | 850 fill power down | 850 fill power down |
| Fill weight | 15.4 oz | not published |
| Loft budget | 13.1k in³ | — |
| Shape | quilt | quilt |
| Shoulder girth | 54 in | not published |
| Zipper | half | half |
| Shell fabric | Pertex Quantum 10D nylon | 10D nylon |
| Hydrophobic down | Yes | Yes |
| Packed size | 7 × 12 in | 5.1 L |
Shaded cells mark the row where one has a measurable advantage. Weight, thickness, girth and shape are left unshaded on purpose: heavier is sometimes tougher, wider is sometimes warmer, and calling a winner on those would be an opinion dressed as a measurement.
What each one does well, and costs you
Katabatic Flex 22 Quilt
- The cord-and-clip attachment is the best draft management on any quilt here; the quilt moves with you instead of being flattened onto the pad.
- Zippered footbox opens the whole quilt flat, so a 22-degree quilt is also a 50-degree blanket.
- Six size and width combinations, each with published fill weight and total weight in both 850 and 900 fill.
- Overfill is an order option, so you can buy a colder quilt without buying a different model.
- Built in Colorado, and single-side loft is published in inches so the rating can be sanity-checked.
- No ISO or EN rating; 22 °F is Katabatic's own number, though the loft spec makes it checkable.
- $409 before options, and the 900-fill upgrade is another $90.
- 23.9 ounces is heavier than the lightest 20-degree quilts here — the attachment hardware and the zip cost something.
- Built to order, so lead times run weeks rather than days.
Sea to Summit Ember 30 Quilt
- Publishes both ISO figures — 30 °F limit, 39 °F comfort — which almost no quilt on the market does.
- Zips into a closed footbox or opens completely flat, so it covers a wider temperature range than a sewn-box quilt.
- 19.2 ounces with 850-fill non-PFAS-treated down.
- 5.1 litres compressed, small enough for a summer kit in a 40-litre pack.
- $414 puts it against the custom cottage quilts, which will build to your width and overfill.
- Only two lengths and no width options.
- 10-denier shell needs care.
- The 39 °F comfort figure means this is a warm-weather quilt despite the 30 in the name.