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When you're hunkered down at basecamp, you need gear that packs down about that small but will provide lots of warmth, like the Mammut Men's Broad Peak II Down Jacket. You can't beat it on a blustery night, because the 750-fill power goose down is super warm. Keep wearing it when you are making coffee in the morning and the Pertex Microlight shell can shed snow and water if the clouds start to drip. Then the weather breaks, and it's time to go, so you pack up the minimalist jacket in your pack without taking up too much space, because it weights only 11oz and stows inside its left hand pocket.

  • Pertex Microlight (polyamide ripstop) shell
  • Water-resistant
  • 750-fill power goose down
  • Jacket can be stowed in left front pocket
  • Drawstring hem
  • Reviews
  • Q & A

What do you think about this product?

Have questions about this product?

My go to insulator on cold days

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

The L fits me great. I'm 69" and 195 w/muscular build. I wore this in fresh deep snow 1 day and learned my lesson. It's too warm for working hard in pow and crud, but it shines on cold days or when ripping groomers. If you're riding lifts longer than skiing like most Midwesterners this jacket is excellent. The zipper was annoying at first, but it breaks in and works better with use. It's Mammut quality but not as expensive as other brands (getting it on sale helps too). It's plenty light and packed down very small in my BD Agent pack. I caught it in the pack zipper once and thought I would need duct tape, but no damage was done. My iPhone 5 fits well in the zippered chest pocket and I always had plenty of battery power since the phone was always warm . I have had a few small feathers poke out, but nothing more than usual. I use bright colors (salamander yellow) to ensure the waitress sees me and my empty beer mug. The Pertex Microlight will shed water and snow as you run for coffee in the morning before the lift opens. The zip up neck provides great coverage without being over tight. I wear it daily sometimes. I recommend highly.

Warm, light jacket

  • Familiarity:I've put it through the wringer
  • Fit:Runs small

This is a very light weight and warm down jacket. I'm 6 foot and 160 lbs. I think the jacket fits tighter than most - I don't see this fitting a huskier body frame. A couple faults I have in the jacket are: the down feathers coming out of the seams rather often, and the jacket zipper coming undone at the bottom. These couple of faults really hold the jacket back, which is a shame because of how great the rest of the jacket really is. Without these faults, I'd give it 5 stars.

Warm, light jacket

Warm and light

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

I gave this to my brother as a gift. He loves it.

This down jacket is not overly puffy like some but still offers plenty of warmth. I would say you could wear this down to around 20 degrees with just a t-shirt under it and be totally warm. Plus this packs down very small and packs down into the left front pocket. This is perfect when you want to stow it in your pack without it taking up much room.

This is a perfect layer to wear under a shell on the really cold days but also works perfectly on its own around town. The only grip he has with this is that the zipper throw is on the left side. This is normal with a lot of Euro brands, but for us North Americans who are use to the throw being on the right it can take some getting use to.

He is 6ft 2 in and the XL fits him well.

Great Jacket

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

The was one of many jackets I wore to Everest Base Camp and it was one of my least favorites.

When I first wore the jacket, it felt very solid. The fit was great and it felt very sturdy. I loved stuffing it into it's own pocket, made it fit nicely in a pack.

That was short lived, as I felt like I had to battle this thing the whole way up and down. After roughly a day or two of wearing this with a pack, I noticed the down seemed to love the outside world. It wasn't little feathers, huge ones would pop out all the time. This is my first down, so I could be a little over critical of this.

The zipper was my least favorite part. I felt like I had to fight it the entire time. With cold hands, this was lame. We spent three nights in a blizzard at Base Camp, and this jacket was not my go to when I was in a rush.

The jacket feels fine in an urban environment though. It's my default jacket for work now. It still isn't easy to manipulate the zipper though.

Edited: This jacket is great. I've been using it more lately and cannot complain. I think my brain was too slow at the higher altitudes.

Here's a photo of the time I met Renan O. in this jacket.

Great Jacket


  • Familiarity:I've used it once or twice and have initial impressions
  • Fit:True to size

Mammut stands for quality. Fit is vital for me - at 6'3" it's tough to find a jacket that's athletic in cut. Why this jacket? 1. fits me perfectly, 2. TWO draw hem cords - perfectly balances with synching both sides, 3. good color (black), 4. chest pocket - can stuff entire jacket into it, and 5. warm. Overall a great design and well-executed. Typical Swiss.

Packable Heat Zone

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

Great jacket that is well constructed and very packable into it's own Napoleon pocket. Lightweight and very warm. I am 6'3", 225 lbs and the XL is just right. Length overall is perfect and sleeve length is spot on. I am looking forward to wearing on the mountain this winter under a gore powder jacket. Should be a great combo. Highly recommend this product. So much so that I bought one for my wife as well.

Comfortable Coat

  • Familiarity:I've used it several times
  • Fit:Runs small

This is an awesome jacket. Very warm and well constructed. My only complaint is the backwards Euro zipper - its very difficult to work. Coat runs just a little small.

Unanswered Question

Hi, i'm 5'10", 190 lbs, 33 waist, i bought a large. Are the sleeves supposed to go down to my finger tips? The chest and waist fit well, even kind of athletic, but i don't know if i can put up with the sleeves being so long.

Unanswered Question

I am 5'8", 175 lbs, with a 37" chest. I tried ordering a medium but the fit was definitely too big for me. I am looking for a more fitted fit. The small states that the chest measurements only fit a 35.8".

Are those measurements true? Will the small fit my needs or am I in the weird in-between size?

Unanswered Question

hi i bought a mammut broad peak about one...

hi i bought a mammut broad peak about one month ago, and i see in the outer layer that defects are appearing almost every time i use it (as if one line of the textile is stretched and causes a visible line for many centimeters alongthe jacket). does someone experience the same?

I'm 5'11" 168 trying to figure out the...

I'm 5'11" 168 trying to figure out the Right size for this jacket Review says it runs a little small just trying to get a feel for

Best Answer


Small is a very relative term isn't it. I have this jacket, and while it is slimmer than a Patagonia Down Sweater, it is a more full fit than an Arc'teryx Cerium LT. The jacket fit it best compares to is a MHW Nitrous. I am very close to your size and take a Medium in this jacket. Still room for layering, but it gives a nice trim fit. You will have plenty of length in torso and arms. Trust me on this one.