It's hard to imagine everyday life as an athlete without insulation jackets, but they are usually worn before and after sport to store heat. I went one step further and also wore them for biking in different weather conditions.

But first to the clever details mentioned above. The filling consists of 88 percent virgin sheep's wool, which is finished with a fine mesh made of polylactide (PLA). This material is made from corn starch and gives the filling the necessary stability. The outer material is a polyester RibStop fabric with a water-repellent DWR coating. A comfortably close-fitting hood, a high collar that extends well over the chin and elasticated sleeve inserts with merino thumb loops also ensure that the jacket feels warm and cozy on cold days. A practical inner pocket helps to pack the jacket down to a reasonably small size. At a time when most outdoor clothing is produced in Asia, we are pleased that Triple2 has these made in Croatia.

"Out with the wool"

The Duun insulation jacket is not only ideal for keeping warm on cooler days on the summit or protecting yourself from the wind on descents. No, it is also ideal for biking in winter temperatures. The sweat absorption is absolutely impressive. Whether you are wearing just a sleeveless functional shirt underneath at plus five degrees or a long-sleeved merino shirt at minus ten degrees, you stay dry even on longer rides. As the breathability is very high, you will never get an annoying build-up of heat, even on steep climbs.

After around 90 minutes of intensive sporting activity, you can feel the moisture collecting in the mid-layer and the "airy" feeling at the beginning slowly disappears. Nevertheless, it still takes quite a while before the jacket reaches its limits and you start to freeze. It lasted around two hours of intensive mountain biking on my body and I'm one of those people who sweat a lot. It withstood light rain well and even when it was noticeably sweaty, the wind protection held up. Even rapid descents in a cold breeze were easy to endure.

Wash cycles are unavoidable with heavy use. However, the Triple2 Duun has not lost its functionality even after eight washes.

Conclusion

While I used to mostly wear onion jackets with softshell jackets, the Duun has now pushed them out of the closet. It has quickly become my favorite bike jacket for cold days. The best thing is that I can also use it for other sporting activities in addition to biking without attracting attention as a biker. There are no faults with this product. From my point of view, Triple2 has done everything right with the Duun.

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