In keeping with the now darker season

I bought this case for my daily trips to and from work by bicycle. The product itself does a very good and qualitative impression. However, at the beginning it has a very plastic-like odor, so you should eventually be aired something. The cover fits perfectly on my small Eastpak backpack, even if it is filled. However, I doubt very much that you can actually take 30-40Liter backpacks. Moored it is at the back with two elastic bands that are attached on one side with snaps on the envelope. Thus, it can not slip off the backpack. The visibility of this envelope is enormously increased firstly by the bold color, on the other hand by the reflective stripes. At the Waterproof I can not make any statements, but is still replenished)

Note: Waterproof seems to be this shell, but after just two weeks using this shell is broken Gege gone :(
... A push button has come loose and on the lower side, the seam has risen. It's a pity, therefore, but only two out of five stars.