Funny rug for kids. Advantages: 1. It plays catchy tunes and the volume can be adjusted.2. You can attach it to your phone or other tips to play any song instead of your pre-recorded song.3. Fun rotating disco light.4. Flashing lights are easy to see when you need to jump on them. Cons: 1. It was hard for a 4 year old to figure out how to jump on two pads at the same time so he was booed the whole time. This skill can be learned, but I wish they wouldn't "whistle" when they made a mistake. 2. Songs can be really repetitive if you don't want your phone or MP3 player connected to your car all the time. (Whereas I am glad that the manufacturer has thought of the possibility to play your own music!)