Baby crawled on the second day!
I am giving this mat a 5 Star based on the functionality rather than the design: one day after the purchase the baby started to military crawl! It is like the mat and its beautiful textured surface unleashed a skill out of the baby :-) I think it provides a perfect grip for her big toe to press onto and push forward.. We are so happy with it, it matches the living room very nicely. We bought it thinking we would use it on the dotted side, but upon spreading it flat we felt that the dots where a little overwhelming (for the living room style) so we turned it to the grey side, which actually looked really neat.
The only "negative": I wish we would be able to mix and match designs and chose which one goes on each of the sides, since we always felt that one side was not convincing to our needs. Maybe that feature will be available for my next purchase! I will recommend it to all friends with little babies.