The Mammut Teton is a robust, and versatile hardshell jacket. Relatively basic in features, but now featuring the new membrane backer from Gore; C-Knit. Designed with hikers in mind, this new backer is intended to work well with Gore Tex membrane – providing the look and feel of a softer fabric whilst remaining rugged and functional.
- 420g (Men’s Medium)
- Vertically and horizontally adjustable, helmet-compatible hood
- Drawcord hem, adjustable by using one hand
- GORE-TEX® 3-layer membrane with C-Knit™ technology.
- Spray-proof 2-way front zip
- 2 backpack- and climbing harness-compatible zipped pockets
- Underarm ventilation with spray-proof 2-way zip
- Pre-shaped sleeves with Velcro closures
Outdoor clothing and equipment can sometimes be overly complicated, but the Mammut Teton is satisfyingly simple. Nothing too fussy, just a well designed jacket that does what its supposed to. Now utilising Gore’s C-Knit backer, this 2016 model is slightly different from older Gore-Tex featured hardshells that traditionally used a Tri-cot backer instead.
So, the first thing that is noticeable here is actually derived from this new C-Knit backing. One complaint that I have often read on social media platforms in comments sections about the ‘best’ waterproof jacket, is that Gore-Tex jackets are too rustly. Sound too much like crisp packets while moving. It’s not something that has been annoyingly apparent to me in the past, but I do understand and agree that traditional Gore-Tex jackets do feel a little stiff and ‘crumpley.’ In having chosen to use C-Knit, the Mammut Teton is alot smoother and feels almost a little more flexible in terms of movement and the ability to combine well with layers underneath in that sense – something akin to a 2-layer waterproof fabric. One thing that Gore have marketed the C-Knit backer to achieve is indeed for it to be noticeably softer, and so create a softer 3-layer fabric as a whole which seems to hold true. With this, comes an apparent reduction in rustling noise. The construction of the backer, being more ‘moveable’ and with more stretch, is said to allow brands to use a wider range of face fabrics also. The face fabric of the Mammut Teton does – as you’d expect – take advantage of this, and appears to be lighter and more flexible than that of other Gore-Text jackets of past years.
The cut of the Mammut Teton continues the level of comfort found in the jacket. Although not as stretchy as a jacket made with Polartec Neoshell for example, it does fit well enough that excessive stretch is not a foremost necessity. The Teton is not cut too slim and infact leaves ample room underneath for a good midlayer. Even with that extra room, it isn’t such that the body or underarms feel too baggy – with the arms fitting just right, not riding up at all when reaching or stretching. Mammut have mentioned that the sleeves are pre-shaped, which plays a part in the freedom of movement. The body isn’t all encompassing, and the underarms are cut at just the right height to make the jacket sit well between clingy and baggy. Fitting well in most areas, the Mammut Teton does lack slightly in length however. Not quite so short that the jacket will rise too much when bending down etc, but a longer jacket would provide more protection from driven rain sneaking in around the waistband of trousers.
One more improvement that Gore’s C Knit backer is claimed to bring, is increased breathability. A frustrating day on High Street, in the Lake District; when the weather would tease between an all out downpour and warmer, overcast spells gave chance for this to be put to use. After using the Mammut Teton on these types of days in early spring, it has to be said that the backer doesn’t bring Gore-Tex standard membrane to the same levels of breathability as Gore-Tex Active, or Polartec Neoshell. BUT; coupled with good sized vents it does allow the Mammut Teton to boast as a really solid alternative when concerns are high about the longevity or durability of the more air permeable, but more delicate 3 layer fabrics. The trade off between robustness and breathability is narrowed with this jacket. Instead of having to repeatedly remove, just to put back on again after 10 minutes of uncertainty, I was able to leave the Mammut Teton on, but still be comfortable enough.
Of course the main question to ask of any hardshell is its capability in keeping the rain out, and the Mammut Teton does not disappoint. After a harsh blizzard on the Fairfield Horseshoe (which led to a retreat to the Priest’s Hole cave) and questionable conditions elsewhere in the UK, the best of our precipitous weather has yet to penetrate. Of course, Gore-Tex will always play it’s massive part in this jacket’s success but the face fabric seems to hold well onto DWR treatment and even after a few months hard useage – rain still beads and rolls harmlessly off. Minimal fussy stitching, two pockets only, and Aquaguard Zips all round aid in the Mammut Teton’s success here. As previously mentioned, the length of the jacket could probably offer a little more protection around the waist/groin area, but in the worst weather you would be sensible to be doubling up with overtrousers for example.
A cavernous hood, with a lot of scope for adjustment helps to cinch the jacket in well around the face which stops any wind driven rain from entering here, also achieved well with good wrist cuff adjustment. There is an internal pocket, big enough for keys or a wallet with the two handwarmer pockets being a little shy of comfortably taking a map. The height of these pockets could do with being higher though, so that their entirety is useable when wearing a rucksack hipbelt or harness. The only other minor niggle with this jacket is that, as is familiar with Aquaguard zippers – the main zip does seem to stick far too often. It is more difficult to unfasten than fasten and so shouldn’t stop you staying dry, but is a point of annoyance.
An exceptionally well made jacket, the Mammut Teton benefits in terms of comfort and increased breathability (to a point) from the Gore C-Knit backer to its 3 layer construction. A simple, unfussy jacket that will certainly keep the rain out and looks set to last well. Nothing fancy in terms of design, but all that you would expect of a top end Hardshell done well – including great adjustment around the hood.