Mammut Mens Rime IN Flex Hooded Jacket Black

Mammut Mens Rime IN Flex Hooded Jacket Black

£153.30 £219.00
30% off

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Other colours available:
Mammut Mens Rime IN Flex Hooded Jacket Black
Mammut Mens Rime IN Flex Hooded Jacket Teal

The Rime IN Flex Hooded jacket is a super warm synthetically insulated jacket that has been designed to optimise freedom of movement. It’s most at home on mountaineering trips in the alps as well as cold walks in the Brecon Beacons.


Season : 2020S C OFFER

Code : 1013-00500-00189

Weight : 0KG

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What is the Rime IN Flex Hooded Jacket?

The Rime IN Flex Hooded jacket is a lightweight, super warm synthetically insulated jacket. Everything about this jacket has been specifically designed to optimise freedom of movement. It’s most at home on mountaineering trips in the alps as well as cold walks in the Brecon Beacons.

What is it made of?

Insulation: The Rime is filled with 100g of OTI stretch insulation for optimum heat retention and increased freedom of movement. The insulation feels deliciously soft when you’re wearing it and moves with your body – even in the most demanding conditions. Although the outer material isn’t waterproof, synthetic insulation will still retain heat even when it gets wet – meaning that you’ll still be warn even if you get caught out in a shower.

Outer Material: Protecting all of that insulation is a lightweight, compressible, slightly stretchy Pertex Quantum Air fabric. This fabric helps to protect you and the insulation from the elements whilst increasing the jackets breathability – incredibly important when your working hard in the mountains.

Inner material: The lining in this jacket is also worth a mention. The Rime has been given and elastic lining with the jacket hugs your body to keep you warm whilst also not hindering your movements – perfect for scrambling, mountaineering, ice climbing and when using trekking poles.

What are the features?

Starting from the top, the hood is fully adjustable and anatomically shaped whilst also being able to comfortably sit over a helmet – this excellent adjustability means the hood can be synched right down to keep your head toasty with or without a helmet. All of the pockets have been designed with practicality in mind – the two hand warmer pockets sit high and out of the way of harnesses and hip belts on rucksacks whilst the chest pocket sits out of the way of the shoulder and chest straps on a backpack.

The front YKK Vislon zipper is two way so is easy to open for extra ventilation when using a harness. The hem drawcord can be adjusted with one hand – perfect if you’re belaying or when you have a walking axe in one hand. To further seal out the cold you have elasticated cuffs that sit snug to your wrists.

How does it fit?

The Rime fits into Mammut’s ‘Regular Fit’ fit block. These garments have a more generous cut that their ‘Athletic Cut’ to allow for extra layers but still share the same tailored traits as the ‘Athletic Cut’ fit block.

Where does it fit in the layering system?

The Rime works well as a stand a lone jacket on cold days but will still easily slide under a shell jacket for an extra layer of protection in the worst conditions.

  • Lightweight
  • Pertex Quantum Air
  • 100 g OTI stretch insulation
  • Elastic lining material
  • Anatomically cut, adjustable, helmet-compatible hood
  • Backpack-compatible chest zipper pocket
  • YKK Vislon 2-way zipper
  • 2 zipper pockets
  • Elastic cuffs
  • Hem drawstring can be adjusted with one hand
Care & Advice

How Should Your Insulated Jacket Fit?

Insulated jackets are pedantic little things. Too tight and you'll compress the insulation and limit the warmth capabilities of your brand new jacket, too loose and you'll spend hours warming up the dead space inside the jacket. Getting the correct fit isn't just about aesthetics, it will determine how warm you are. 

The Incorrect Fit

Too loose: A jacket which is too loose will keep you relatively warm, however it will take far longer to do so and will waste large amounts of your precious energy. An insulated jacket works by trapping the natural heat that your body gives off in the fibres of the insulation; this creates a micro-climate inside your jacket, keeping you warm and toasty. If your jacket is too loose, heat will be able to escape through the hem, the sleeves and the neck of the jacket; it's a little like sticking the heating on in your car with the windows cracked open - it will heat up, just incredibly slowly.   

Too tight: A jacket which is too tight is arguably worse than one that is too loose. If your jacket is far too tight, the baffles can compress to a point where the insulation can't loft effectively, limiting the amount of warmth it can trap. Essentially, it won't work! 

The Correct Fit
It's a tricky one to explain, but it's somewhere in the middle. You've first got to consider how many layers you'll tend to wear underneath; will you have just a t-shirt then the jacket, or possibly a baselayer, midlayer and then the jacket? When you've figured out your layers and you've popped your insulated jacket over the top, you shouldn't have any dead space inside. The cuffs and hem should be comfortably sealed around your waist and wrists with room to move. You should be able to lift an arm up above your head without the hem of the jacket lifting more than an inch or so, and the sleeves should be long enough that when carrying out the same motion, they aren't mid-way up your forearm. Your shoulders and chest area should have enough room so that your hands can touch behind your back without feeling restricted. 

Additional Information
Lastly, consider which activites you'll primarily be carrying out while wearing the jacket. Are you primarily using it as a winter climbing piece, or an everyday/dog walking jacket? You'll find that technical climbing jackets tend to feature a shorter cut, while urban and casual jackets feature a longer cut to offer additional warmth with less mobility.

To see examples of what a badly fitting and correctly fitting jacket looks like, click here.

Technical Information

Weight: 500g

Cut: Regular Fit

Filling: 100% Polyester

Insert: 94% Polyester, 6% Spandex

Lining: 100% Polyamide

Main material: 100% Polyamide


Sizing Information

Mammut Men's Jackets & Shirts Sizing Information

Measurements refer to body size, not garment dimensions.

  Chest Waist Hip
Small 34 - 37" 28 - 31.5" 33.5 - 36.5"
Medium 37.5 - 40" 32 - 34.5" 37 - 39.5"
Large 40.5 - 43" 35 - 37.5" 40 - 43"
X-Large 44 - 46.5" 38 - 41.5" 43.5 - 46"
XX-Large 47 - 49.5" 42 - 44.5" 46.5 - 49"
  Chest Waist Hip
Small 87 - 94cm 73 - 80cm 86 - 93cm
Medium 95 - 102cm 81 - 88cm 94 - 101cm
Large 103 - 110cm 89 - 96cm 102 - 109cm
X-Large 111 - 118cm 97 - 105cm 110 - 117cm
XX-Large 119 - 126cm 106 - 114cm 118 - 125cm

Slim Fit: A very close fit around the upper body and arms, body-hugging, very elastic/stretchable materials.

Athletic Fit: Dynamic cut, defined body shape, pre-shaped sleeves, elastic/stretchable materials.

Regular Fit: A close, athletic cut, with little tailoring, comfortable, some elastic/stretchable materials.

Loose Fit: A wide, and in some places longer, cut on the upper body and arms, for a casual and comfortable fit, made from stretch materials.


Measure around your chest/bust, holding the measuring tape under your armpit.


Measure around your waist at the narrowest part.


Measure around your hips at the widest part.


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Mammut Mens Rime IN Flex Hooded Jacket Black

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Excellent customer service. Really detailed easy to understand product descriptions on the Trekitt website, and gear reviews on the Trekitt YouTube channel made it so easy to choose the right backpack for me.

Emily - May 2020

Amazing service! Very helpful in regards sizing and what most matched my needs, despite this being done over the internet. YouTube videos of products being examined are very useful also. Would definitely use again, very fast and efficient delivery. Brilliant! Highly recommended!

David R - April 2020

Highly recommend. I usually go to the shop in Hereford as staff are alwasy very helpful and knowledgeable. So this was the first time I have purchased online and the service was just as good as the shop.

Grizzy - April 2020

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