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Mammut Xeron Men's Insulated Jacket

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Retail Price £150.00Was £135.00

Colour: Titanium Graphi - £110.00
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A warm, water-repellent and lightweight insulated jacket - exclusively available at GO outdoors.

Built for alpine activity, Mammut's Xeron Jacket is made using Pertex Endurance fabric with their Ajungilak OTI Climate fill insulation, which makes it lightweight, tough, breathable and water-repellent.

Designed with articulated elbows, it lets you move without restriction, without the fear of the sleeves riding up to expose you to the elements - making it great for climbing or scrambling in inclement weather.

The hood is under-helmet compatible with a stiffened peak and gives you a great level of adjustment, letting you find a secure and protective fit every time.


  • 2 raised zip secure fleece-lined handwarmer pockets
  • Zipped chest pocket
  • Drawcord waist adjustment
  • Hook & loop cuff adjusters
  • 2 way front zip, ideal when wearing a pack or harness


Windproof: Wind Resistant
Breathability: Good breathablity
Hood Features: Any Hood, Helmet Compatible, Volume Adjustable
Jacket Features: Breathable, Insulated, Packable, Water Resistant, Wind Resistant
Packable: Yes
Pockets: 3
Recommended Use: Approach, Backpacking, Climbing, Duke of Edinburgh, Everyday Use, Expedition, Hiking, Mountain, Touring, Travel, Trekking, Walking
Waterproof: Water Resistant
Insulation Type: Synthetic
Cut: Harness Compatible
Fabric: Pertex Endurance
Gender: Mens
Zip Type: Full Zip

Reviews (19)

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  • 2 out of 5
Poor Quality, 29 January 2017
By Jamie (Stourbridge)
I absolutely loved this jacket. Looked great and was so warm and lightweight. Problem is after only one walk in Wales with a light backpack on the back of the coat got really worn. Nearly on hole in one place. Really gutted! I see another person has had the same issue. Go outdoors had no problem in exchanging it for a Rab jacket. If you're only buying it as a jacket to wear to walk over the park in or down the pub then it's great. But not an active outdoor coat!

  • 1 out of 5
Awful build quality, 02 January 2017
By steve n (UK)
3 days ago I bought this jacket.

After ONE walk with a lightweight backpack to the climbing wall the Pertex outer is ruined from just the straps against the outer, leading to tears and pulled threads.

Appalling performance for a jacket in this price range.

Have contacted Mammut directly to question about QC issues, bt will be returning this jacket as its not fit for use if a 10 stroll can destroy the outer.


  • 5 out of 5
Warm Yet Cool, 04 February 2016
By Jacob (Wigan)
purchased this jacket while on sale at 18%
i was fed up of being cold so decided i needed an insulated jacket, and this jacket doesn't disappoint the quality is outstanding the only let down is the slightly snaggy zip, the mix of vertex endurance on the outside of arms and hood plus vertex quantum give great weather resistance.
plus it looks the part

  • 5 out of 5
Awesome jacket, 12 January 2016
By Kota
This jacket has been with me mountaineering in the Caucasus, the Alps (in summer and winter), ice climbing and rock climbing. It's perfect - fit is great, it's durable and I don't have to worry about keeping it bone dry. Not as warm as many big puffy down jackets but that's not what it's trying to be.

As a bonus, it's a decent price and it looks cool enough to wear day to day too.

  • 5 out of 5
Excellent, 12 October 2015
By adibranch (Derby)
Had this a while now, and used it in cold weather walks, as well as on some overnight camps on the hill in autumn cool and windy conditions as an outer layer.

It really is great.. Its a GO exclusive but its actually the same as a Mammut Rime Pro but without the interior mesh pockets. Its warm enough for standing around in on cold nights (although for winter you'd need something a little more substantial), its light, packs down well, and the hood is excellent with cinching all round. The material is soft, comfy, and warm, and the fleece lined handwarmer pockets are just another added bonus.

I love this jacket.. i'm hoping it will take me into winter as a standaround jacket for nights on the hill, but I think it will be pushing it for warmth, so probably not in all honesty. Don't let that put you off though as it really is incredibly warm and comfy.

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