Review: Montane Alpine 850 Nano Hoodie - Jacket

 


 
 

Price

£300 RRP (2025)

Gender

Men’s and Women’s

Brand // Manufacturer

Montane

 

What we liked

  • Super light

  • High warmth to weight ratio

  • The feel of the Pertex Quantum fabric

  • Dries extremely quickly

What we didn’t

  • Not very generous arm and body length

  • The stuff-sack floats free in the pocket and gets in the way

  • Lack of internal ‘drop-in’ pockets


 

The Verdict

 

THE SHORT READ…

The Montane Alpine 850 Nano Hoodie is an ultra light-weight puffer jacket that you won’t notice in your backpack, which uses a combination of down and synthetic insulations, in a relatively slim fit that’s designed to keep you warm on the move, and which dries quicker than regular down by adding actual gold particles to the down to vibrate you to warmth again. While we do point out some niggles, it does it’s primary functions really well (and suprisingly well on the drying front) - read on to find out more!


 
 
 
 

THE LONG READ …

We love a warm but very light puffer, here at Backdrop - ones that will keep the chill off when being blasted by the wind on a ridge but won’t boil you in a bag when you are actually moving. How does the Montane Alpine 850 Nano Hoodie stack up, then?

Fabric, Construction & Weight - It’s uber-light, only 235g in size Large. Plus, it packs down really well, as down does, into it’s own stuff sack. It won’t take up much room in your backpack, for sure. The fabric feels really nice - it’s Pertex Quantum and doesn’t seem to get static-y when moving against your skin. Construction seems top-quality.

Most of the insulation is goose down, but there are two areas where synthetic insulation - Primaloft Gold (100% recycled) - is used, in the high-moisture area under the armpits, and also in a panel in front of your throat and up under the chin.

Fit - It is slim-fit, but not tight. My biggest gripe with this jacket is that it’s not very generous in arm-length and body-length though. I’d never normally wear an XL but feel I needed it here. For something that is designed to keep out the chill, I want the sleeves to be generous and really cover my whole wrist and actually start to run up over my hands, to warm that area and keep out drafts, but I feel the L needs at least another 1-2 cm of sleeve length to do that. Body length is ok, but again, could do with perhaps another cm extra. The good news is, with it being slim fit, in the next size up probably won’t be leave you with too much extra flapping around your middle.

Do the main zip all the way up and it’s nicely cosy around the neck, the elasticated hood hem helping to block out drafts.


 
 
 
 

‘Both the Klattermusen Lopt and The North Face Bettaforca are ideal for backcountry skiing and snowboarding. Both fit snuggly, the Lopt come in both mens and womens, and is available as a vest/gilet and a jacket (either with or without a hood), the womens is far more fitted with a wider hem.’


 

Performance - It is aimed at keeping you warm, but not not too warm, during movement. It’s not a belaying jacket, for example, where you are standing around for ages not moving much. I found the warmth-to-weight ratio to be satisfyingly high, even when just standing around though. And we are all different in how much heat we give off when moving - for me it’s quite a lot - but I was able to stay comfortable moving, controlling heat-retention with the main zip just fine.

The aspect of it’s performance that astonished me was how quick-drying it is. The goose down inside is something called ExpeDRY, which essentially bonds gold particles to the down. Any heat warms the gold up first, the vibrations of which then warms up the down faster than it would otherwise - this not only keeps the jacket drier when sweating and moving, but if you get soaked will get the jacket drier faster as well. They say “50% faster” and I was prepared to be underwhelmed but in a test where I soaked the arm of the jacket while wearing it (it took a while, and hand-pressure, to get through the DWR), with cold water, outside on a 1 degree C day. Honestly, even in that temp it dried at least 50% faster than the synthetic jacket I did the same test on. After 15 mins it was noticeably drier, whereas the synthetic still felt just as wet as it had started. True, immediately after the initial wetting, the synthetic jacket was warmer, as you’d expect in that comparison, but how quickly the down dried compared to the synthetic was frankly astonishing.

Yes, it is still down, so when it had dried again, the goose down that had gotten soaked had packed-down noticeably, compared to the down that had not gotten wet, and it stayed packed-down, losing some of it’s warming ability and would need a nice tumble-dry to restore it’s fluffiness. But down jackets are targeted at drier climates, or to be protected from prolonged wet with a rain shell over the top, so this is to be expected.

The water-repellency though, i.e. the DWR, is very good, with water beading off nicely. In the test above, I had to work the water into the fabric with my hands to get it really soaked through. Only time will tell how long that lasts, of course, but the Pertext Quantum is very tighthly woven, which will help a lot.


 
 
 
 

Zips & Pockets - It has two hand pockets, with the insulation on the exterior of the pocket only, which is good, your body will do the warming on the inside.

A gripe here is that I really feel it’s missing a couple of large internal ‘drop-in’ pockets, one each side, for stuffing items like a hat, or gloves in, next to your body to keep them warm. There is no chest pocket either, which is less of an gripe but which would have been nice. I know it’s about keeping weight down but we all love having enough pockets on external clothes.

The zip-pulls are very light-weight also, and feel quite sharp-edged with bare hands. The feel of those could have been made nicer, I think. But, they do keep the weight down and the pulls are long enough to use with gloves on.

Hood - Insulated as well and relatively close-fitting. While not advertised as helmet-compatible, I did get it most of the way over a climbing helmet (just a couple of inches of the front of the helmet not covered).

Cuffs - On the Alpine 850 Nano, the elasticated sleeve cuffs are set back inside the jacket by a couple of cm, same with the lower cuff around the hem of the jacket. This means that a bit of the insulation projects over the elastic and (on my skinny wrist) isn’t in contact with the skin which made the arm feel even shorter than it is. The set-back seams would be totally fine if the sleeve-length was much more generous, but as it is, I felt that the insulation after the seam wasn’t really contributing any warmth. Size-up one, with this jacket.

There is no drawcord around the hem of the jacket, but it’s very close-fitting there anyway, so it doesn’t seem needed, probably even if you size up.

Stuff-sack - Instead of one of the pockets having a double-sided zip-pull, there is a separate (but removable) stuff-sack attached inside the right-side waist-pocket, and it just kind of floats around in that pocket when not being used, so every time you put your hand in your pocket, you feel it. If you put a hat or glove in that pocket, then take that out, quite often the stuff-sack comes out too and you have to stuff it back in the pocket again.


 
 

SUMMARY…

As a super-light, high warmth-to-weight ratio jacket, meant to keep you warm while you are moving, the Montane Alpine 850 Nano Hoody is an excellent bit of kit. Even more so when you factor in that it’s noticeably quicker drying that some equivalent-weight synthetic insulation jackets. The slim/active fit feels really nice, as does the shell material itself.

Yes, you might detach the stuff-sack and, er, ‘file’ that somewhere, and it might be missing a couple of large internal stuff pockets, but on balance, these are minor compared the primary job the jacket is designed for, and which it does really well. It’s biggest downside, in my book, is that the sleeve length is not generous, so the taller, longer-armed of us L-wearers will likely need to size-up one with it, and it’s slim fit should allow you to do this, unless you are extremely light-weight yourself!


 

Words - Andy Beale

Photos - Montane & Andy Beale