This rattle toy has been designed hand-to-hand with certified otorhinolaryngologists, with whom we have been able to create the perfect sound pitch that will help babies calm down, rather than overstimulate! Filled with incredible textures & details that will help stimulate baby little one's senses while teething on them! -Sound made from upcycled cherry seeds! -Calm babies down with sounds of nature!  -Easy to grasp, hang & take everywhere! And great stocking stuffers during the holidays!