This is one of my son's favorite toys. He first started paying attention to it at about 2 months, mostly because of the bright colors, I think. He's now nearly 5 months old, and he enjoys grasping it so it crinkles, chewing on the attached bug and rings, a and looking at himself in the mirrored wing. The toy is small enough to take in the diaper bag, and the included clip is really handy with the infant seat and stroller. This is a great toy for infants, and you can really see changes in the way they play with it as their motor skills develop.