Babies like to chew on things that show they train themselves for controling their biting power when they grow up also that’s how their gums develop. Get your baby this awesome training teether step 1 by Pigeon. It’s made of high-quality PVC-free, BPA-free material. It’s perfectly designed. It has no sharp edges, it is designed to keep the baby’s delicate gums in mind. Suitable for babies of Age 4 months +