1Shake and enjoy the sound, children can exercise their music cells from childhood. 2The gentle rustle makes the baby very happy, to supplement the child's childhood happiness. 3Towel like soft material, soft plush toys, safe and no harmful for baby's skin. 4Promote baby's auditory, visual and tactile development (The sound is small, so as not to affect the baby's hearing development). 5There are 2 different types available, you can choose by your needs.