We have did our research, there are many teethers in market, but mainly for teething pain relief. But mouthing begins much earlier than teeth comes out, baby needs more sucking practice than just feeding. Most babies take pacifiers but some babies especially the breast feeding ones refused anything but mom's breast. Mombella Mimi the mushroom is made just for those babies, works for infants to 5-6month babies, for sucking & suckling practice. Through sucking, your baby's tongue gains more control on movement inside the mouth,also the movement works the muscles that open and close the jaw, which will be good for speech development,also helps with better feeding.