We received this as a gift when my daughter was born. My first impression was that it wasn't the one I had registered for nor was it the one I wanted. I was seriously considering exchanging it for another. On closer inspection, I realized it would be worth a try to see how the baby would react to it. At only a few days old, she loved it. At a few weeks old she started rolling over to get to either the mirror, the light up flowers, or her favourite toy of the week hanging from the bars. At a few months old, she started to get up and shimmy, and very soon after that crawl to get her favourite character. And a few months later (between six to seven months old), she started using the arches as a means to stand up and hold herself up. She started walking at 10 months, and since then, the gym was put away. It will come out again in a few months when baby number 2 arrives. I believe that this gym really helped my daughter develop and to this day she has love of zoo animals (not sure it is connected, but her favourite characters hanging tend to be her favourite animals today). I would highly recommend this gym to anyone looking for an infant activity gym.