This play gym is the best. We didn't register for it, and when I received it as a gift I thought it had too much going on. Little did I know how thankful I would be for it! My baby started playing on it around 6 weeks old. I've seen his brain develop right before my eyes thanks to this toy. He started to reach out for toys, he started rolling over, he started noticing himself in the mirror, bringing things to his mouth, and now he's starting to scoot himself around to get to all the fun stuff. Soon he'll be crawling! All of the toys that hang from the arches do something neat and different to stimulate your baby. The mat itself has little surprises...mozart, crinkling ears, a hidden squeaker, a giraffe tail. It's the perfect place to put your baby for his developmental "tummy time" as a newborn and then for his developmental play time as an older infant. I'll cry when we have to put it away! A definite must-have!