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Meron IN Hooded Jacket - Men's

4.5 out of 5 stars
40 Reviews
Current price: $239.50 Original price: $479.00
50% off
Color:Blood Red/Black


Size Chart


Why We Like The Mammut Meron IN Hooded Jacket

The Meron IN Hooded Jacket offers the shelter and warmth we need when belaying our partner in the high alpine. Its dense insulation and lightweight design ensure we're comfortable while moving quickly.


  • Hyperlight down jacket designed for mountaineering and alpinism
  • 900-fill down insulation packs warmth while being compressible
  • Toray ripstop shell is water-resistant to keep you dry
  • Hood adjusts over beanies and helmets ensuring comfort and safety
  • Item #MAMU5KV
100% nylon ripstop, DWR coating
900-fill down
Fill Weight
Center Back Length
[medium] 30in
adjustable, helmet-compatible
2 backpack- harness-compatible zippered, 1 internal zippered
Claimed Weight
mountaineering, backpacking
Manufacturer Warranty
2 years

Overall Rating

4.5 based on 40 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 14 reviews
5 Stars - 24 reviews

Fits True To Size

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

February 9, 2024

I live in the Canadian Rockies where winters can be harsh. This puffy is warm, light, and very comfortable! I would definitively recommend.

Originally reviewed on

5 out of 5 stars

December 30, 2023

Very light, very warm

I got this jacket mostly for ski touring and winter camping. It's very warm, almost not worth wearing in anything over 25F or so. I'm 6'2 170 lb and got a medium which fits well, a large would have been easier to throw over more layers though. The sleeves are nice and long which I appreciate as someone with longish arms. The sleeves are a little tight when putting the jacket on but fine once it's on. Also the 900 fill is crazy and I love how small this jacket packs down. I wish it had external chest pockets but that would make it heavier I guess.

Originally reviewed on

5 out of 5 stars

December 6, 2023

Warm and comfy

This jacket has lasted me for multiple years of wearing it in harsh conditions while climbing and skiing. It is light weight and you can tell the material is thin, but it hasn't had any issues snagging or ripping. If you are not in cold weather though this jacket is probably going to be a little too warm for you. I can only wear it on really cold days so keep that in mind. All in all I recommend this jacket to all of my friends.

Nash W

Originally reviewed on

5 out of 5 stars

November 30, 2023

Great coat for warmth

I have had this coat for probably a month now and it's perfect for cold interior alaska temperatures. In the month I have had it, however, I have already gotten 4 tears in it. It seems as though the trade off for it being a super lightweight warm jacket is that the fabric tears super easily which I think is important to keep in mind. Overall I am happy with the jacket I am wary however to use it as an everyday jacket because i am afraid of getting more holes in it

Eli L

Originally reviewed on

4 out of 5 stars

November 16, 2023

Very Lightweight, very warm, comfortable, fits awesome.

Not sure how durable it will be, only time will tell

Originally reviewed on

5 out of 5 stars

April 5, 2023

Lightweight warmth

Love the fit, I'm 5'9", 155lbs, medium fits like a glove. Very warm, super packable and fit's well under a shell when needed, well designed.

Originally reviewed on

5 out of 5 stars

April 4, 2023

Nice jacket

I've used it several times
Size Bought:
6' 3"

This coat is ultra-lightweight, stylish and warm enough for shoulder season use (Spring and Fall). It’s got a snug hood, deep zippered side pockets and fits just right with good length in the arms and torso. The outer fabric is very fragile but if you don’t bushwhack, it’ll last fine. Mammut makes high quality coats and the Meron is one. 6’3”, 185, Large

Richard C
5 out of 5 stars

March 21, 2023

Awesome Light Weight Jacket

This jacket is warm and lightweight. The shell fabric is a bit fragile but that's the trade-off for weight. Cannot recommend enough. I've taken this thing on all sorts of ski trips, climbing trips, and camping trips. I've been in temperatures as low as -27c and it holds its own. Please note if you're unsure about your size, measure your chest and look at the sizing guide. I am 5'11" 175 lbs and I wear a large.

Originally reviewed on

5 out of 5 stars

February 20, 2023

puffy is super warm. almost too warm when used for layering. great for split boarding changeovers

Jared P

Originally reviewed on

4 out of 5 stars

December 13, 2022

An unique and well made jacket

I am 6'2", 185lb and ordered a x-large. This jacket is not entirely what I was expecting. It is definitely sized more as a belay jacket rather than a heavy midweight jacket. For that purpose I think the large was the right size. The only thing counter to that is the sleeves are a bit tight for pulling on over another jacket. There are a few things to note. First, the 900 fill is crazy. I have never experienced something that expands to so much loft at its weight. Like almost a balloon. I'm not sure how much this informed the choice of fabric. On that front, I would say the fabric is good and bad. The lining and exterior fabric are light, extremely packable, and have a nice look. But they do not breath and get clammy with any moisture. You might think, of course it doesn't breath - its a down belay jacket. But I am saying this in comparison to something like a Rab Positron, an extremely large insulated jacket. So be aware of that quality. This isn't exactly what I purchased it for but I think this will make an excellent emergency layer for weight conscious activities like back country touring. It packs down extremely small for its warmth allowing you to bring a legit belay jacket in a backpack for breaks or security if you might have to bivy or something. Almost forgot one of my favorite features - the two large interior drop pockets. These are perfect and all such jackets should have two large, mesh, stretchy drop pockets like this does.

Originally reviewed on