Two sleeping bags worth lining up side by side. Both are solid; the right one depends on the specs you care about most.
| Mountain Hardwear Phantom 15 | Rab Neutrino Pro 500 | |
|---|---|---|
| GearScore | 87✓ | 65 |
| Comfort rating | 26 °F | 26 °F |
| Weight | 2 lb 0.6 oz | 2 lb 0.3 oz✓ |
| Warmth-to-weight | 4.8 /100g | 4.8 /100g✓ |
| Packed size | 5.7 L | n/s |
| Fill power | 800 FP | 800 FP |
| Price | $680 | n/s |
| Fill | Down | Down |
| Style | Bag | Bag |
| Shape | Mummy | Mummy |
Highlighted cells mark the better spec: Phantom 15 in blue, Neutrino Pro 500 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 Phantom 15 and Rab Neutrino Pro 500 take different routes to the same job. The Phantom 15 wins on balance, and the Neutrino Pro 500 pushes back on low weight and warmth-to-weight.
The Neutrino Pro 500 is 1 oz lighter and stronger on warmth-to-weight. On the default GearScore the Phantom 15 leads 87 to 65.
Pick the Phantom 15 if you care most about the overall package. Pick the Neutrino Pro 500 if low weight and warmth-to-weight matter more to you, or you are focused on counting grams on long miles.
The Rab Neutrino Pro 500. It is 1 oz lighter than the Phantom 15.
The Rab Neutrino Pro 500. It is stronger on warmth-to-weight than the Phantom 15.
The Mountain Hardwear Phantom 15, 87 to 65 on the default algorithm. You can re-weight the factors to match your trip.
It depends on your priorities. Go with the Phantom 15 for the overall balance, or the Neutrino Pro 500 for low weight. The spec table above shows exactly where each wins.