Cumulus Aerial 330 Sleeping Bag is the lighter of the two by 137 g (4.8 oz).
Cumulus Aerial 330 Sleeping Bag
Spark Pro 30
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Weights and prices are the manufacturer’s published figures. The lower weight and the higher R-value are highlighted.
| Cumulus Aerial 330 Sleeping Bag Gossamer Gear | Spark Pro 30 Sea to Summit | |
|---|---|---|
| Weight | 17.0 oz | 21.8 oz |
| MSRP | $399.00 | — |
| Temperature rating | — | 30°F / -1°C (manufacturer rating, not independently ISO 23537 / EN 13537 tested) |
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“Meet the sleeping bag that does more with less: a limited-edition Cumulus Aerial 330. Weighing just 17 oz and rated for 30°F, it ditches the extra down on the bottom (your sleeping pad’s got that covered) and skips the zipper for max performance. Designed with 900 FP down and sleek Toray Airtastic® fabric, it’s a minimalist’s dream for outdoor adventures.”Full specs and prices for the Cumulus Aerial 330 Sleeping Bag →
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“The Sea to Summit Spark Pro is the brand's flagship ultralight down bag, built with 900+ fill power goose down and a 10D nylon shell for maximum warmth at minimum weight and pack size. The 30-degree model is a two-season backpacking bag for weight-conscious trips.”Full specs and prices for the Spark Pro 30 →