With this Savannah play mat and its 20 fun activities, you can help your baby promote their development. The play mat comes with a round activity toy that can be attached in various positions on the mat. This should encourage your baby to try out different lying positions and benefit from the developmental advantages of each one. A removable music and light toy can play three soothing melodies. You can also attach the toy to the crib or car seat. The toy is activated by pulling, which teaches your baby about cause and effect. Batteries (2x AAA) are not included.