For product itself:
The jacket comes with a stuff sack, which comfortably fits into any daypack. What is noticeable is that the material is not so much exhales, like other outdoor products and this, although produced in China. The jacket has a right "textile feel" and therefore does not rustle as much as the other products in this segment.
Through a back vent, which is adjustable with Velcro, air circulation, which is very pleasant and contributes to good comfort. Breathability or not, here there are limits and 100%, there is not. It always depends on the person who wears the jacket. Who, as I sweat quickly, which is not 100% stay dry in a 200 EUR Jacket. More surprised I am with this. At leicher to moderate exertion (hiking, walking) you have a good feeling.
The size is fit with a very slight tendency to "something big". But that's okay, because you also so something can draw thicker underneath without equal look like a "brawn" ;-)
For occasional summer rain or a windbreaker for quick throwing over when standing sweating in the wind, you can recommend this product without reservation. Of course, there are better, but not for 30 EUR.