I didn't see many reviews of this backpack, so I'm willing to share more details.

Received it just today, have not tested yet, but it looks just perfect. The top opening has zip and clip with straps for compression.

I wanted backpack which can be compressed when I'm not carrying many things, but can be enlarged if I decide to go shopping.

I am also fan of pockets rather than roll top bags.

The backpack is normally quite expensive, but I managed to find it on Zalando Lounge for less than 100€.

Let me know if you have any questions or want more detailed photo.