Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.
Western Mountaineering Kodiak MF comes out ahead by a narrow margin (4.7 vs 4.9). The gap is mostly about winter expeditions where bag failure is unacceptable — read the strengths below before deciding.
The Spark 0 is the best-overall pick — Sea to Summit's lightweight zero-degree bag with 850 fill.
The Kodiak MF is the premium pick — Western Mountaineering's USA-made zero-degree bag, exceeds its rating.
Best warmth-to-weight. Lightest shell. Premium.
Best-tested warmth. USA-made. Most premium.
| Spec | Sea to Summit Spark 0 | Western Mountaineering Kodiak MF |
|---|---|---|
| Fill | 850 fp down | 30 oz of 850 fp down |
| Shell | 10d nylon | — |
| Weight | Ultralight | — |
| Brand | Sea to Summit | Western Mountaineering |
| Origin | — | USA |
| Tubes | — | 3D draft |