Premium materials, a tapered fit and box-wall construction makes this bag highly thermally efficient – a winner for winter camping.
- Exceptionally warm
- Tapered fit
- Down fill not hydrophobic
Mountain Hardwear Phantom 0/-18 is the flagship sleeping bag in the Mountain Hardwear line. As it's name suggests, the Phantom 0 offers warmth down to a bone-chilling -18°C. Yet, given its four-season capabilities, it is lightweight and compact, with an impressively small pack size that ranks among the best in this class. It is filled with a hefty 850g/1lb 14oz of 850 fill power down, housed in either a Pertex Quantum or Gore-Tex Windstopper fabric shell.
The fit is highly tapered to maximise thermal efficiency. As such some might find it a little restrictive, though at high altitudes or low temperatures you’ll appreciate the extra warmth.
- Explore the best sleeping bags in our buying guide
- Get a comfortable night's sleep with the best sleeping pads
- Learn how to choose a sleeping bag with this comprehensive guide
The one rather surprising omission is that the down fill has no hydrophobic treatment, though arguably the highly water-resistant outer renders this unnecessary.
In the field
In full winter conditions, being zipped up in this bag as your breath condenses in the chill air of your tent is a wonderful sensation. It does a great job of locking in vital warmth thanks to a well-designed neck baffle and vertical box-wall chest baffles to counter down migration, which could otherwise cause cold spots.
The footbox and panelled hood are similarly well-constructed. To be honest, there’s little to fault. So if you’re a serious winter camper, you might consider this tried-and-tested four-season down bag for your next adventure.
Similarly, if you’re heading off on a trekking or mountaineering expedition at higher altitudes, it’s a good choice to take with you. Otherwise, in all honesty there’s a good chance that a bag delivering this much warmth will be overkill.
All the latest inspiration, tips and guides to help you plan your next Advnture!
Thank you for signing up to Advnture. You will receive a verification email shortly.
There was a problem. Please refresh the page and try again.