Basically, the union is well designed and thought out. Fasten Reflektorer, drawstring for perfect and additional bag can be very positive!
Point deduction there for which he has still not covered by the getesten backpacks the top Fitzel backpack. This behavior occurs because the most recent backpacks have no reinforced back and straps are the uppermost point. Thus, it slips down.
2. General Problem This covers: the space between jacket and backpack are unprotected and at punt rain, it is then in between still wet quickly.
Conclusion: good value is Top. Optics is optimal! And basically also recommended. However'll look around to protect backpack and back because it brings me personally more in the future for a similar combination of a rain capes.