Nipple can be used as an approximate marker of the child'sage, because children grow at different rates. You will understand when your child is ready to use a bigger nipple with a faster flow by looking at intensity and speed of the suction. Variations in size and type of Baby Land Nipples helps to choose a suitable nipple for your baby. This product is ideal for feeding babies and children of different ages. BabyLand nipples come in both classic and wide mouth types with dome shaped and orthodontic nipples in different sizes.