The Jerven Bag


The Jervenbag Exclusive

Weight: 750 gram - 102x220 cm.

Image of 723410Gives you the freedom to choose!

We have made our most advanced and most flexible Jerven Bag model ever. Let us present the Jerven Bag Exclusive: Size: 102 x 220cm, weight only 750gr.

Silicon coated zippers, improved protection against the elements: wind, water, snow.

We have made the Jerven Bag warmer. You have the choice of 70gr or 170gr Primaloft lining that can be attached according to need.

NOTICE: The PrimaLoft lining is sold separately and is attached by zipper.

The Jerven Bag Exclusive will therefore suit various seasons and the individual’s needs and requirements.  Use it without lining, with 60gr or with 170gr lining –you have the choice.

The Jerven Bag Exclusive – without lining: a light windsack, poncho & tarpaulin. Weight appr. 750gr.  A simple, flexible model of the Fjellduken.  Big enough to sit inside, and ideal as a waterproof throwover cover for both you and backpack. Areas of use: Small game hunting, fishing, hiking in the forest or in the  mountains during the milder times of the year. Note!  You will experience condensation, therefore not suitable as sleepingbag cover.

The Jerven Bag Exclusive- with 60gr PrimaLoft lining gives a warmer/cosier windsack for use the year through.  Weight appr. 1600gr.  It is big game hunters  best friend.  Suitable as poncho, windsack, stand-cover and as sleepeingbag / sleepingbag supplement.  Condensation problem is then just about eliminated.  The perfect combination for varied use the year through - to sit inside, walk with, lie down in.....

The Jerven Bag Exclusive with 170gr Primaloft lining gives an extra warm/cosy windsack for colder more extreme conditions,  for example in the winter......
Weight appr. 2200gr.

Incl. with the Fjellduken Exclusive you get:

  • Jerven Rescue flag: 50x50cm orange signal flag with reflective tape – a cord in all 4 corners to make it easy to tie it to apole or similar – recommended by The Main Rescue Centre at Sola.
  • Jerven belt bag with belt and buttonhole webbing: this means that you can easily carry the Fjellduken Exclusive on short trips when you do not need a rucksack.
  • Jerven Arming:  This means you keep your arms dry when you use the armopenings on the Fjellduken.  Also very handy during slaughtering.
  • 10 year warranty: Possibly Norway’s best User guarantee? Covers faults in material and seams.
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The Jervenbag Original      

Weight: 650 gram - 143x143 cm. 
 
A piece watertight of material, with zippers around the edges. Aluminium coated on one side, camouflage colored on the other. A big enough poncho, big enough to be used as a wind sack - for sitting in it. That’s the way it all started, and The Jerven bag Original has been, and will remain unchanged! To put it in another way; the
wheel cannot get to be more round.
 
Admittedly, we have made several new models of The Jerven bag, but those will always be in addition to, not instead of The Jerven bag Original.
This the single layer, light Jerven bag, which is permanent contents in the backpack.
And that’s the strength. It’s there!
 
The minus is, that it creates condensation. The outer material is completely tight, but that is deliberate. Breathing materials are not tight enough when you’re sitting in the soaking wet marsh. In addition, the materials let out heat. Oh, well. When you don’t want to carry more than 600 grams, that’s what you get. Yet, a single layer bag is still a thousand times better than no bag!
 
This is the bag for the small game hunter, the fisherman, the hiker and others,
who are spending time outdoors.

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The Jervenbag Thermo                    

Weight: 1300 gram - 143x143 cm.
 
This is the same bag as The Jerven bag Original, about 1,45 x 1,45 meters, folded as a wind sack. And, it’s lined and padded with PrimaLoft. That means, that it is not only heat reflecting, but also heat insulating. In addition we have almost eliminated the condensation problem.
 
During testing in the winter of `95 we had, inside The Jerven bag Thermo, a rise in temperature of unbelievable 29º C. (52,2 °F). Outdoor temperature -14º C. (6,8 °F), and inside the Jerven bag +15º C. (59°F). The only heat source was the
person inside the bag! The Jerven bag Original reached +9 C. (48,2°F) in the same test.

And in the picture below you can see how not to use The Jerven bag Thermo. With the legs on the outside. Get yourself a larger bag, or follow the tips on the next page!

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The Jervenbag Thermo Mini-Hunter

Weight: 1300 gram - 93x185 cm.
 
Identical to the The Jervenbag Thermo Hunter, but smaller. For people lower than 175 cm.



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The Jervenbag Thermo Hunter

Weight: 1500 gram - 102x220 cm.
 
This has become the super bag for the hunter on watch – And that’s not without a reason.
Being able to stretch the legs when the hours get long is worth gold.
 
Measurements as a wind sack are 2,2 x 1 meters. Two-way separable zippers offer a lot of options. Moreover, it’s light. Only 1500 grams (3.3 lbs). When you are sitting like in this picture, the heat flows upwards and keeps both face and hands warm.

While in the woods it’s not advisable to make the least of sound when the firing moment is getting closer. Here you may bring out the gun (which has been placed under the flap, due to rain) without pulling the zipper – as that sound may be sufficient.…..

Novelties 2007!

250331Fjellduken Thermo Hunter now is available in a total of five (5) different camo- and colours.
 
Sharp orange/rescue - Mountain camo - Forest camo - Desert camo - Winter/hvite

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The Jerven bag Hunter desert...            ...and Hunter winter

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NOTICE: HUNTER VERSION - ALSO AVAILABLE AS HUNTER RESCUE:
 
We carry orange colored Jerven bags, Thermo Hunter and The Jerven bag, Thermo Extreme, in stock. This is the identical bag. The difference is the thickness of the Primaloft padding. Hunter has 60 grams per m², and Extreme has 170 grams. The size, as a wind sack, is 220 x 100 cm.
 
Rescue helicopters, the Civil defence, the Red Cross, the Military, domestic and abroad, foreign rescue departments, etc. have taken the Jerven bag in use as rescue equipment. The reason is simple enough. The Jerven bag retains the body heat better than the traditional woollen blankets, etc.
 
Rescue crews on search for missing persons in the mountains, ought to carry The Jerven bag in the orange color with them. Both as a safety for their own lives, and for wrapping around frozen persons.
 
The heat effects from the different Jerven bags are described in the SINTEF- report (Click here to read more about the Sintef test)

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                     Warm and visible ...
 



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The Jervenbag Thermo King Size         

Weight: 1900 gram - 143x220 cm.

It has been told about a guy from here in Odda, that he was too big to be a human - and too small to be a troll. With 60gr. Primaloft padding.
 
Okay. Grown up guys shall also have a Jerven bag. The King Size-bag is 220 x 143 cm, connected as a wind sack. This normally gives room for two. Or, you may stretch out all you want and sleep a little. With such a large «single unit-dwelling» the options are many.
The padding is the same as in the smaller Thermo bag. If you’re over over 1.90 cm and 100 kilos (6’3”/220 lbs)., choose the King Size Thermo.
 
The King Size-bag is probably, due to its size, the most useful bag.The possibility to stretch the legs and really rest is sometimes worth its weight in gold. If you turn the inside out, you’ll have a warm quilt, for use at the cottage.


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The Jervenbag Thermo Extreme             

Weigth: 2000 gram - 102x220 cm.
 
This variant of The Jerven bag was earlier developed upon a wish from the Military: «Make a Jerven bag, which is warm enough to replace the sleeping bag at winter time.»
 
Well, some think we have succeeded, others don’t. We have gotten feedback from avid open-air campers,who seem to be able to take the most of what you might throw at them of low temperatures. Ohers shiver when the night temperatures get close to + 5º C (41°F.). Ifyou use a light sleeping bag in addition, you ought to do just fine.

As a windsack it is quite superior. When you sit in this bag, it is close to impossible to get under + 20º C (68°F.) ! About 25 degrees C (77°F) is common. (See the Sintef report.) But, then you’re awake. It will not be quite the same when you sleep. You will fall asleep, but you may also wake up rather early. Most of us are very spoiled with the comfortable quilt at home. In any case, it is a definite alternative to the sleeping bag.
 
As wind sack/bag the The Jerven bag, Thermo Extreme is 2,2 x 1 meters. The padding is PrimaLoft 170 grams (0.4 lbs) per m². All the other thermo canvasses have PrimaLoft 60 grams per m².


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NOTICE: EXTREME VERSION - ALSO AVAILABLE AS EXTREME RESCUE:
We carry orange colored Jerven bags, Thermo Hunter and The Jerven bag, Thermo Extreme, in stock. This is the identical bag. The difference is the thickness of the PrimaLoft padding. Hunter has 60 grams per m², and Extreme has 170 grams. The size, as a wind sack, is 220 x 100 cm.

Rescue helicopters, the Civil defence, the Red Cross, the Military, domestic and abroad, foreign rescue departments, etc. have taken the Jerven bag in use as rescue equipment. The reason is simple enough. The Jerven bag retains the body heat better than the traditional woollen blankets, etc.

Rescue crews on search for missing persons in the mountains, ought to carry The Jerven bag in the orange color with them. Both as a safety for their own lives, and for wrapping around frozen persons.

The heat effects from the different Jerven bags are described in the SINTEF- report (Placed on another page in this website...)



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                     Warm and visible ...
 


Jerven Armings

161886One set of Armings are now standard for the Jervenbags - included in price.
 
ARMINGS (arm protectors) – well, what else should they be called? This way you avoid getting wet when you sit with the arms outside the Jervenbag, and you don’t need to get dirty when you are butchering.
 
If you close the one end, you may pick (cran) berries and put it in the "arming". That’s perhaps something you’ve got to have with the wild meat, in any case. "Armings" are now standard for the Jervenbags!




Jerven Rescueflag

161890All models of The Jerven Bag includes one Jerven Rescue-flag in the price.
 
Throughout the years, many people have saved their lives, because they had carried The Jerven bag with them. We’ve both heard and read about it, .. but we shall be the first ones to admit, that it is not easy to find someone, who is sitting still in a Jerven bag, with the camouflage colors.
 
We have, therefore, developed an orange flag, which may be used to attract someone’s attention. The flag has, in addition, been equipped with reflective materials. Searching with a light (flashlight) in the dark almost becomes easier than searching in daylight. The flag has also got strings in it, making it easy to fasten to the backpack, ski pole or other places.

And then we have the following advise: Should you be so unlucky and break a leg (or a ski) and you’d have to sit in The Jerven bag for three days, before you’re being found, you ought to, in addition to The Jerven bag, have a groundsheet and a couple of candlelights. Some food and drinks would not be too crazy either.

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Commander of the 330 squadron, Lieutenant Colonel Nils Frøisland are hoping for fewer Sea King-searches in the mountains.





“Rescueflag – increases the chance to be found...” 

"The 330 squadron (the rescue helicopter service in Norway) often assists the Police and The Main Rescue Central, in connection with searching for missing hunters in the mountains. When the Rescue Helicopter Service receives a message about a “missing hunter”, many factors play a role in order to carry out an effective search, with a positive find as the result.

One of those factors is the color of the hunter’s outer clothing. As we all know, most hunting clothing is colored green and in worst cases, the hunter has chosen a camouflage variant, which is adapted to the hunting terrain. All hunters ought to carry emergency aids, which make it possible to be easily seen in the terrain, should an accident occur. 

The Main Rescue Central and the 330 squadron are of the opinion, that a “rescue flag” will enhance the chances for a positive find. Other emergency aids, which might also come in handy, would be a reflective safety vest, a strobe light (small flash light, with strong, flashing blitz light) or a powerful flash lamp. "

Commander of the 330 squadron, Lieutenant Colonel Nils Frøisland
- The Main Rescue Central at Sola, Norway

 

- Here are some user-tips for you:

Lower the sweating speed and walk till you are dry and warm, before sitting down.
 
Be seated inside the Jerven bag before you start feeling cold.
 
Don’t heat for the crows! Get your legs inside the bag and close ”the door” behind you.
 
Place the sitting plate or the ground sheet inside the bag. Otherwise you may experience that things blow away when you get up. (Anyone recognizing this experience?)
 
The first place you start feeling cold is on your feet, so if you are going to sit for long, long, long, you ought to take off the sweaty boots and put on a pair of roomy slippers.

If you don’t want to bring the dirty boots inside the bag, you may place a couple of plastic bags over them.

Would you like 30 degrees C. (86°F) heat inside the bag? Light a candlelight! (NOTICE: On your own responsibility). There is no danger for an explosive fire, but all use of open fire inside The Jerven bag involves the danger of burning a hole, so please use your head - think! For example a casserole from the storm kitchen, with a rock in it. Then the candlelight is standing steady, and pay attention to headroom up to «the ceiling»!

OBS! Do not use Tea Lights (the metal surrounding the candle gets to be too hot).

This is also an excellent way to drying a wet Jerven bag. Warm air will retain the moisture - cold air lets go of the moisture. Therefore, the dew during the night. (What don’t we know, ….) And therefore, there will be condensation in an unlined bag. Moist, warm air hits the ice cold outer bag directly: Hocus-pocus, water!

Using The Jerven bag while on watch has a number of definite advantages: 

1. Camouflage:
You are equal to the terrain, and you have lost the shape of a human being.

 
2. Smell: Your body odour stays inside the bag. The odour is not so easily spread in the terrain.
 
3. Movement: It is easier to sit still and quiet when you’re staying warm. The more practical and comfortable you are, the easier it is to keep going. Should it become too comfortable you might risk falling asleep. We have heard of several such cases.
 
4. Sound: Let be chattering via the hunting radio in season and out of season. But, that has, strictly speaking, nothing to do with The Jerven bag. Simply had to mention it.

How to sleep in a Jerven bag?


During the winter you ought to have a double layered ground sheet, in order to insulate against the snow. The ground sheet shall be placed inside the bag, and so should the boots. That way they are warmed up for the next day.
 
If you don’t have a sleeping bag, place the jacket on top of you as a quilt, don’t keep it on in the ordinary way. Make sure that the zippers and eye holes are placed in such a way, that water doesn’t run in - it case it starts raining. Lie as well protected against the weather as possible. Remember, that even if the material in The Jerven bag is watertight, the construction is not.

In any case, the long zipper should not point up, but rather down. It will, namely, function as a thermal bridge, and as spot where the heat will be let out.

There is no danger of perishing, due to lack of air while you sleep.Your body is made in such a way,that you will wake up in case you should get such sensations. Otherwise, one has normally a small opening (over) in front of the nose.

Fresh air is in.
 
So what can you expect from The Jerven bag?
Always dry and warm? Broadly speaking, yes. But, it will also to a large degree be up to yourself. If you have been able to hang in there “through the curves”, you will, in this brochure find many tips about how you may make use of The Jerven bag. You should still be aware, that the construction does not give a 100% protection against long lasting rain. Zippers, eyeholes and seams are spots, where the water may get in.

Which brings us over to an important point:
 
Care and maintenance:
Impregnation: There are a number of useful types of impregnation in the stores, but we would recommend the Kiwi Camp Dry with 13% silicon. It is a spray on, and costs about $ 15 (in 2003). Use impregnation over the entire bag, especially after washing. Spray the zippers too. Then the water will glance off, and you may shake the bag almost completely dry, following a break in the rainy weather.

Holes and torn parts:
Use the repair-kit with glue (Look in our webshop!) for easy repairment of the Jerven Bag.
 
Washing:
Wash in lukewarm water, up to 40 degrees C (110°F). The Thermo bags should not be machine-washed or tumble dried. But they can be, provided you have a gentle washing program. Do not use a spin dryer. Firstly, it is not a good idea to try to pressure water through a watertight material. Secondly, the padding may be torn out of the seams and become lumpy. Remember impregnation after washing.

Storage:
Dry and airy! If you store a moist, folded Jerven bag (this also applies to tents), it will look and smell like an old and spoiled cheese.

Right! Now you’re warned....

Click on this link to see an overview over all Jerven Bags!

Contact us!