I bought this rug for my daughter at age 4 months, she immediately liked hitting the keys with his feet. Small hanging toys are great too. You can remove the ark, hang toys on the carpet. My daughter is 6 months old and she still loves to have fun on the carpet. The carpet washing machine very well and does not damage. In terms of negatives, I would say that the structure is easily picks up at the extremities of the piano but not the ark so grave that is not harmful to the baby. The carpet is a little hard to focus on the structure. There are 2 modes of music but I would have preferred that there is no music mode, ie only with the sound of the notes when tapped on the keys. Then there are the 2, the music sounds alone, it is a little heady. I recommend anyway because baby love!