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For seriously cold weather, get the seriously warm Frost Line.

Find shelter above the tree line when you zip into the MontBell Frost Line Down Parka and keep climbing up towards Camp II. A toasty layer of 800-Fill powder goose down becomes your warm fortress when the cold grips you during a big climb, ski tour, or winter camping. The Frost Line’s tough 30-denier ballistic ripstop nylon shell with a DWR finish stops the moisture in its tracks so you can stay warm and dry for the rest of the trip.
  • Box-wall, baffled construction holds the down in place for consistent insulation for years of mountain weather
  • Micro-fleece collar lining doesn’t rub your mountain-punished face when you use it as a shield
  • Removable, helmet-compatible hood provides shelter while climbing but comes off once you climb into your tent
  • Adjustable hem features hidden drawcords inside hand pockets so you can seal out the elements
  • Elastic cuffs don’t move and seal out the cold and snow
  • This highly compressible parka includes a stuff sack for maximum packability

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Review Summary
9 4
1 3
1 2
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MontBell Frost Line Down Parka - Men's

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Here's what others have to say...

5 5


  • Familiarity: I've put it through the wringer
  • Fit: True to size

In the winter I work outside in western Alaska, and run backpacking trips in Wyoming in the summer. I wanted a down jacket that could pull double duty. This jacket has fit the bill perfectly.
It is super warm, especially for the weight. I comfortably wear this jacket by itself down to 0 degrees, throw on a sweatshirt and I can wear this down to -15. The biggest problem here in Alaska is the wind. I have worn this jacket in 35 mph winds with just a softshell layered over it.
The outer shell fabric is really light, but has held up for me in light rain showers for short periods quite well-as well as any other down jacket I have owned.
The best part of this jacket is that it has just the right amount of features without being overly "techie". The pockets are HUGE, perfect for carrying a water bottle to keep warm on belay ledges. The removable hood is great. The hem cord elastic gets pulled up into the hand warmer pockets, so that when it's cinched down there isn't any excess elastic to get snagged on a harness or something. And this jacket packs down very small.
Overall a great product.

5 5

Polar Vortex Tested

  • Gender: Male
  • Familiarity: I've used it several times
  • Fit: True to size

Along with a base layer, a flannel shirt, and a sweatshirt this coat kept me perfectly warm on my mile walk to work in -13F. I don't know how better to recommend this coat.

Would this jacket be suitable for Denali?...

Posted on

Would this jacket be suitable for Denali? I own it and I'm trying to avoid buying a new down jacket for my Denali climb next year. I'm guessing it might be a bit too light, though.

Responded on

The Montbell Frost Line parka is a great, warm layer that may be suitable for a Denali climb, but it's going to depend on the season and your other layering options. This is definitely on the lighter side for Denali climbs and if it's your first foray into high altitude cold weather mountaineering, I'd recommend investing the money into a more suitable jacket. I generally recommend Denali W. Buttress climbers have an outer parka with 225+ grams of 650+ fill down. This parka has 190 grams of 800 fill down, so it should come close to the same warmth, albeit a bit on the lighter side. I've seen many guides walk to the summit in their Patagonia DAS parka, but they've mastered their layering system and know how their body performs at altitude and in cold. If you've got a 80-100 gram synthetic mid-weight puffy for lower altitudes, you could always combine the Frost Line and that layer to beef up your layering system and increase your warmth on summit day. If you're planning on climbing in May the temps are significantly colder and you'll want to layer accordingly, but in July summit temps and nighttime lower Kahiltna temps can be as warm as 20-30 degrees Fahrenheit.

Is this jacket sewn-through or box-baffled...

Posted on

Is this jacket sewn-through or box-baffled construction? On this site it says sewn-through, but on the Montbell site it says Box construction. My understanding is that those are two different ways to baffle a down jacket.

Best Answer Responded on

Hey Matt,

MontBell went all out and made sure this was box-baffles. No 'for looks' down jacket here. this thing is fully functional.

is good enough winter in new York?

Posted on

is good enough winter in new York?

Responded on

Definitely. Just keep in mind that it's not waterproof, so if there's a lot of snow or rain it'll lose its warmth.

Responded on

it's also not windproof so you may need a shell on a windy day, or you might be too chilly.

5 5

Warm, soft, portable... perfect

  • Familiarity: I gave it as a gift, but have feedback to share
  • Fit: True to size

I gave this jacket to my younger brother as his xmas present, and he's absolutely loved it. It's definitely very puffy, but in a good, warm way. Every time I saw him this past winter, he had it on- even inside, because it's just that comfortable.

5 5

Yellowstone in February

This jacket could not get any better!!!!!!

5 5

1/2 a sleeping bag

  • Familiarity: I've put it through the wringer

This jacket is everything I hoped, and more. It's lightweight has all the bells and whistles. Detachable hood is a feature I haven't used yet, but can envision the pro's of having that option. Stuff sack is a great size, and once stuffed the jacket can double as a pillow.

All in all I would recommend this jacket to all my friends, and even my enemies.

am looking for a good belay jacket while...

Posted on

am looking for a good belay jacket while ice climbing. consider:
1. montbell frostline
2. OR maestro
3. OR incandescent
need to be:
1. warm in temps <20F
2. light weight, compressible/packable in small bullet bag while multipitch ice climbing
any suggestions on best of the above for this use?

Responded on

they all have some good warmth. the montbell is the heaviest and is made with the thickest material. my only experiences with insulated montbell jackets have involved down coming out. i would go with the incandescent.

The description is confusing. it says...

Posted on

The description is confusing. it says "Sewn-through, baffled construction". So which is it Sewn through or baffled?

Responded on

It's baffled construction if you're still wondering

5 5

Utah Mountains--one year later

  • Gender: Male
  • Familiarity: I've put it through the wringer

This is a great jacket. I bought it as a fall-back shelter for prolonged outdoor adventures or for days when I'm out in the weather all day for work or play. I bought an XL, bigger than my normal L, to fit over the other layers I would be wearing.

It is too warm for hiking or climbing, but works well for camp, belay, or delays on the trail.

After two winter seasons of use I found it to be plenty durable; use normal cautions when wearing.

The other day at work I was stuck out in sub 20 degree weather for an entire day. At the end of the day when I was exausted and chilled, I put it on and powered through to the end, cosy and warm.

The jacket covers me to below my butt, has a great hood, and the arms are plenty long. Good use of down--no cold spots for me.

I would recomment it to a friend.

4 5

gave as a gift

  • Familiarity: I gave it as a gift, but have feedback to share

looks warm, and looks made well

Highlining in a blizzard with montbell!

Highlining in a blizzard with montbell!

Posted on

highlining in a blizzard, this thing was perfect

Responded on

I love mine, I went to college in South Dakota, we had a lot of -30 with windchill days throughout our winters, and I would walk the mile to class with this and just a t-shirt and be sweating when I got there!

Responded on

your mother behind you looks very concerned...

Responded on

and it looks like the guy with the stick is prodding you forward.

5 5

Very Warm!

This parka will really keep you warm. Proper layering in temperatures around freezing will be important and I haven't been in really cold temps yet, but I expect to be comfortable in it (and I'm ALWAYS cold.) I originally bought a MH Chillwave but the sleeves on it were too short. The sleeves on the Frost Line are plenty long (I bought a large and wear 35/36" sleeve in dress shirts.) I do wish it had an external chest pocket. Also, unfortunately this parka is made in China, which has already blown my New Year's resolution to avoid buying Chinese products. I guess warmth trumps principles this time. Very light weight, great down loft, great parka!

3 5

Good Jacket, but insulation was not spread evenly

I bought this jacket and was really excited when I got it because it lofted up so high at first. However one day when it got to be around 5-10 degrees with some wind I decided to try the jacket out while walking the dogs and noticed i was getting getting cold around my lower back. When i came back inside I inspected the jacket more carefully and saw that the bottom two baffles on the backside were almost completely empty of down. It was a huge let down because I love Montbell jackets. I have both the UL Thermawrap and the Alpine light down parka and absolutely love them. Who knows maybe I got a bad one, but I ended up going with the RAB Neutrino Plus.

5 5

Serious Weather Only

I love the quality and the amazing warmth but I am returning it. I gave it full stars because it is perfect for its intended use. I have a low tolerance for cold, but this is overkill for anything above 20 deg F. I need a jacket with a range of the low teens to 40 that can be layered. So a down jacket that is not baffled (one difference between a parka and a jacket I'm told) is better for me. I found that perfect (for me) jacket in the Marmot Ama Dablam.

How does this compare to the mountain...

Posted on

How does this compare to the mountain hardwear subzero parka?

Best Answer Responded on

Quite a bit lighter weight - will be around as warm as the better quality down. If your using where weight is a concern and you will only be wearing intermittently, definite advantages over the MH jacket. If your looking for more of a use all the time jacket / utility / not concerned with weight and how it packs as much - go with MH.

I have the Montbell Permafrost Down from...

Posted on

I have the Montbell Permafrost Down from a few years back. Will the Frost Line sit closer to he body...less of the 'Michelin Man' effect?

Responded on

I just picked up the Frost Line. Feels like a sleeping bag above your waist, the only problem is it looks like a sleeping bag above your waist. "Michelin Man" for sure. Perhaps a reasonable sacrifice for most to get this much warmth and versatility for the money.

5 5

Great Jacket

Extremely warm, light, and supple. You can't buy a warmer jacket at this price point. This is not an expedition jacket, but it is much warmer than any other down jacket that is similarly priced. The baffled construction eliminates cold spots. The hood is great. The shell fabric is fairly sturdy, but for rough conditions I wear a tough gore-tex shell over it.