Here is how these two sleeping bags compare on the numbers. The Bishop Pass 15F leans on low weight while the Badger MF answers with warmth, so the pick comes down to which you value.
| Mountain Hardwear Bishop Pass 15F | Western Mountaineering Badger MF | |
|---|---|---|
| GearScore | 84✓ | 64 |
| Comfort rating | 26 °F | 25 °F✓ |
| Weight | 2 lb 5.4 oz✓ | 2 lb 6.0 oz |
| Warmth-to-weight | 4.2 /100g | 4.2 /100g✓ |
| Packed size | 8.1 L | n/s |
| Fill power | 650 FP | 850 FP✓ |
| Price | $335 | n/s |
| Fill | Down | Down |
| Style | Bag | Bag |
| Shape | Mummy | Mummy |
Highlighted cells mark the better spec: Bishop Pass 15F in blue, Badger MF 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 Mountain Hardwear Bishop Pass 15F against the Western Mountaineering Badger MF is a study in priorities. The Bishop Pass 15F wins on low weight, and the Badger MF pushes back on warmth and warmth-to-weight.
The Bishop Pass 15F is 1 oz lighter. The Badger MF is warmer (rated 25°F vs 26°F), stronger on warmth-to-weight, and higher fill power (850 vs 650). On the default GearScore the Bishop Pass 15F leads 84 to 64.
Pick the Bishop Pass 15F if you care most about low weight, which makes it the better call for counting grams on long miles. Pick the Badger MF if warmth and warmth-to-weight matter more to you, or you are focused on colder nights and shoulder-season trips.
The Mountain Hardwear Bishop Pass 15F. It is 1 oz lighter than the Badger MF.
The Western Mountaineering Badger MF. It is warmer (rated 25°F vs 26°F) than the Bishop Pass 15F.
The Mountain Hardwear Bishop Pass 15F, 84 to 64 on the default algorithm. You can re-weight the factors to match your trip.
It depends on your priorities. Go with the Bishop Pass 15F for low weight, or the Badger MF for warmth. The spec table above shows exactly where each wins.