Baby Neptune Carrier Toy Bar by Baby Einstein is an attachment for your child carrier for little ones under the age of one. The toy bar features a small little "fish tank" that lights up, has bubbles and makes music. My little one never really got into the toy bar, it was not interactive enough for them to really enjoy. Despite the good little music and effects, it is pretty simple overall. It is advertised as engaging, but we just didn't see our son really get into it. The little beads and fish that hung from the bottom bar where cute, and he did occasionally kick at them, but overall he had little interest in the display. Overall, when you are looking for toys to entertain your baby in their carseat carrier, this toy is not how to do it.