Hilleberg Jannu

 In gear review

As explained in my review of the Hilleberg Soulo, I’ve kept borrowing the Hilleberg Allak from my friend each time I needed a two person tent during my winter snowshoe/mountaineering trips for the past two years. And as I said in my review of the Hilleberg Allak, if I had to buy an expedition tent, I would not go for the Allak but for the Jannu. And so did I.


Four seasons double wall tents, completely free standing, very easy and fact too pitch; usable in all conditions even extreme.

Hilleberg Jannuthe camp


  • Tent fabric: Kerlon 1200 (minimum tear strength of 12 kg/26.5 lbs)
  • 3 x 9mm poles
Hilleberg Jannu : sizes

Manufacturer's data

  • Minimum weight: 2.5 kg
  • Full weight: 2.9 kg

Hilleberg Jannu : données techniques


  • Very easy and fast to pitch (no more than 3 minutes)
  • Completely free standing
  • Lot’s of space and very comfotable for a 2.9kg expedition tent
  • Price
  • Less easy to pack
  • Can’t share the load

Ease of Use

This is THE strong point of the Jannu and what I like so much about those Hilleberg tents. With the flysheet being fixed to the tent, the short pole sleeves and the clip system, the tent is as easy and fast to pitch as a single wall tent. It takes about 3 minutes to pitch it as shown in the video below. Fully free standing it is easy to pitch on snow or a slab.

The drawback is that it is harder to pack. nothing unmanageable but it’s a bit of a pain to find back which clip goes with which. They would have used colors that would have been way easier.

Usable space

Kerlon 1200 fabric is silicone-coated on both sides, which makes it very waterproof. In addition to this, according to Hilleberg, Kerlon fabrics are arguably the strongest, lightest tent fabrics available ; four to five times stronger than most so-called “expedition grade,” heavy duty tent materials.

Wind stability

The three poles, the dome shape and the fabrics gives the tent a very good wind stability. It can be strengthen with the guy lines that are attached to the tent.


There is one roof vent integrated at the front into the top of the door. It is covered by a separate vent cover which allows you to leave the vent opened even in bad weather. They could have manufactured an extra mesh vent at the rear for better ventilation by creating an air flow. The inner tent door is a mesh panel covered with an equal sized, zipper-adjustable fabric panel.

Ventilation is a bit difficult to evaluate in Japan as the air is very humid and I have never seen a single tent which does not condensate. What I can say is that compare to some others it is on the lower side.


If the Kerlon fabric is as resistant and strong as Hilleberg says, this tent will follow you everywhere for a very long time if you take good care of it.


Why did I bought this tent?

A 2 persons, free standing expedition tent, very easy to pitch, double wall, with plenty of room… and all that for 2.9 kg! From all the research I’ve made on the web, it might simply be the best tent on the market in this category. Compare to the Hilleberg Allak tent I was borrowing so far from my friend it has a smaller foot print so it can be pitched on narrower places and save 200g, to go under the 3 kilos, while it still has enough space. For me, the extra comfort of the Allak is not worth it. Compared to the old MSR Fury I own, it weights 600 grammes less (the new version is lighter but is still 3.2kg), the Jannu has more room, but more than that, it is 1000 times easier to pitch. I would definitely not want to pitch the MSR Fury in a snow storm.

Other reviews more or less all say the same thing. Check this very good and detailed 4 seasons tents comparison : http://www.outdoorgearlab.com/4-Season-Tent-Reviews and their review of the Jannu. Looking at other tents, a 2.9kg double wall tent with so much space, I find it very competitive. In comparison the Mountain Hardware 2.3 kg single wall tent with less space… I don’t find it competitive. If I had to go for a single wall tent without space and comfort I would rather choose a less than 2kg assault tent.

So if ease of pitching, ventilation and comfort after spending the day out in arsh conditions, are important for you and if you have the budget, this tent will be a very good choice that you will not regret.

But if a small footprint to pitch the tent on very narrow snow ridges and be extra light are important for you, and comfort and double walls for ventilation are none of your concerns ; in other words if you climb light and fast, then this is not made for you and you should better look for an assault tent.

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Showing 2 comments
  • Sam

    Really interesting reading. I’m a bit torn between the Allak and the Jannu so really interesting reading.

    The one query I’ve got is about feasibility of cooking in both these tents. On a previous winter mountaineering trip we had a Nordisk Oppland tunnel tent, which while pretty difficult to set up on the snow did give us a comfortable area to cook in. Was just wondering if you had any experience of cooking in either the Allak or Jannu, and if so what your thoughts might be?

    Thank you!

  • Matthieu

    Hello Sam,
    Glad to hear someone found this article interesting.
    First of all, I must say that you should not cook inside the tent because of the risk of carbon monoxide.
    I always cook in the entrance, having it wide opened if the weather allows it.
    To answer your question, it was quite a while back when I winter camp with my friends Allak but you’ll have more space to cook in the Allak as the entrance are bigger and higher. But I always winter camp in my Jannu and have no problem with it. I use a low profile burner to melt snow and cook and manage to do it with the entrance partly closed. Sure you’ll have to get organised as it won’t be as comfy as in tents like the Hillberg’s tunnel tents with a large entrance.
    But as far as I am concerned – we all have different priorities and criteria – if it is for a few days winter camping in the mountains tour where I will have to carry the tent plus probably climbing or other gears, I’ll choose the Jannu without hesitation because of the weight. I get good comfort and a very functional tent for less weight. The additional comfort of the Allak is not important for me.
    You might want to look at the Nallo 2 GT. It’s even lighter with a big vestibule where you’ll be comfortable cooking. But the Inner tent of the Jannu is wider than the Nallo and when you have lots of gears that makes a difference being comfortable sleeping.
    If I was going for an expedition in Alaska for 1 month where we would be dropped by an helicopter and then just pull our gears loaded on a pulka with skis, then its a different story. The additional comfort would matter. But then I wouldn’t go for the Allak either. Probably the Nammtj.
    Sorry, it’s not a clear cut answer but I hope it helps.

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