Two sleeping bags worth lining up side by side. On the data the Flex 22 is the stronger all-round pick, and the question is whether the Hydrogen 30 still fits your budget or priorities.
| Katabatic Gear Flex 22 | Marmot Hydrogen 30 | |
|---|---|---|
| GearScore | 86✓ | 63 |
| Comfort rating | 32 °F✓ | 36 °F |
| Weight | 23.9 oz✓ | 25.4 oz |
| Warmth-to-weight | 5.6 /100g✓ | 4.7 /100g |
| Packed size | 8.0 L | n/s |
| Fill power | 850 FP✓ | 800 FP |
| Price | $409✓ | $429 |
| Fill | Down | Down |
| Style | Quilt | Bag |
| Shape | Quilt | Mummy |
Highlighted cells mark the better spec: Flex 22 in blue, Hydrogen 30 in amber. A blank spec is never counted as a win. A lower comfort rating in °F means a warmer bag, so the warmer bag takes that row. GearScore is the overall rating (0 to 100); re-weight it on the full bag comparison. Prices are current MSRP.
The Katabatic Gear Flex 22 and Marmot Hydrogen 30 take different routes to the same job. The Flex 22 is the stronger pick on most of the specs that matter, while the Hydrogen 30 makes its case on price.
The Flex 22 is warmer (rated 32°F vs 36°F), 1 oz lighter, and stronger on warmth-to-weight. On the default GearScore the Flex 22 leads 86 to 63.
Pick the Flex 22 if you care most about warmth and low weight, which makes it the better call for colder nights and shoulder-season trips. Pick the Hydrogen 30 if you would rather save the difference.
The Katabatic Gear Flex 22. It is warmer (rated 32°F vs 36°F) than the Hydrogen 30.
The Katabatic Gear Flex 22. It is 1 oz lighter than the Hydrogen 30.
The Katabatic Gear Flex 22, 86 to 63 on the default algorithm. You can re-weight the factors to match your trip.
The Flex 22 is the stronger all-round pick here. Choose the Hydrogen 30 if it is the better value for you.