The guys at Mammut.ch were kind enough not only to reply to my tweets and emails but they also sponsored me with winter sleeping bag - Ajungilak Kompakt Winter. This was rather unexpected since most of the big companies don't even reply to their emails - ever!
Thumbs up for Dominik Ryser,
Appearance and design
Neat is the best word to describe the bag. From the color combination to materials used - it all comes together very well.
The yellow compression sac is easy to spot in any kind of environment, which might be helpful if you accidentally dropped your bag on a slope while preparing for overnight bivouac or camping.
Red color inside the sleeping bag itself is not only sexy but it has a psychological effect regarding warmth. Since red is associated with fire you have this feeling that you're gonna be warm once you get in. Of course this is not necessarily true but it's a detail that gets you prepared for a comfy sleep (and it's one of those small things that you cannot put your finger on that adds up and make you love your bag).
Modern sarcophagus shape of the sleeping bag, follows your body line and ensures you don't loose heat. This means you won't have too much room to move but that's the case with any sleeping bag anyway. The fit is neither tight nor loose, it's just right.
- one that tightens the collar of the bag
- one that tightens the hood
The sleeping bag is rated -9° Celsius (15° F) for men and -3° (26° F) Celsius for women (are men more resistant to low temperatures than women?!).
According to the internet, when I was up in Fagaras Mountains, testing the bag, there were anywhere between -15° to -20° Celsisus (frosty night all over Romania actually) down in Brasov (my home city) and Fagaras. So my guess is that it was a bit warmer, from -11° to -15°, up in the forest, at approximately 1800 m altitude.
Now you may ask: Were you cold during that night, sleeping outdoors on the spruce twigs?
I wasn’t. But I was dressed with all my clothes (except the waterproof jacket). Just before the sunrise I felt a small hint of coldness but I wouldn’t say I was cold. So, assuming there were -15 degrees Celsius, let’s say my clothing provided the extra insulation for those extra low degrees (from -9° to -15°).
This was the first time I was actually warm and snug sleeping outdoors in wintertime. So I may be a bit biased since this is the best sleeping bag I’ve ever had but the rating of minus 9 degrees Celsius (comfort) is honest.
I cannot tell you much about the filling of the bag since all that terminology is foreign language to me (you can read more about MTI®13 filling here). Ajungilak Kompakt Winter is a synthetic sleeping bag, filled with hollow fiber which traps air, and thus provides good insulation. However the weight - volume ratio (capacity to trap air) of hollow fiber are inferior compared to down.
Source: Mammut.ch - Ajungilak Kompakt Winter
Depending on the size of the bag (according to your body height) the weight ranges from 1750 grams to 2100 grams. Mine is 195 cm long so it's 2 kilos heavy.
I've never had a bag lighter than this so this is nothing new to me. Considering the ergonomic shape, the small cool features and the temperature rating, the weight that comes attached is not a bad trade.
However, I'd like to have a lighter bag for those technical winter mountaineering tours where I also carry a rope, harness, crampons, snowshoes and what not. A lighter backpack means easy climbing and faster ascents.
A good non pretentious bag for winter tours where lightness is not the most important aspect.
You can count on it in low temperatures (as low as -15 ° C for comfort I'd say - with a few extra items of clothing on you).
The synthetic filling means that you don't have to worry too much if your bag gets wet due to water, snow or ice - unlike down bags which require more care regarding exposure to moisture. If it gets wet, make sure you leave it out in a ventilated place before storing (and store it loose, NOT inside the compression sack).
Wicked compressibility with the included compression sack which allows you to drastically reduce the volume of your bag (small pack necessary while carrying it in your backpack).
Overall - a cool sleeping bag to have! Thanks Mammut!
Check out more pictures below:
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