A nipple which allows a baby to do adequate peristaltic movement (waving) to suck the milk is a good one. A baby does not suck the milk by biting a nipple with his jaw. The most important point is that the nipple should allow a baby to use his tongue adequately. Therefore, an appropriate amount of milk must come out from the eye of a nipple. A nipple from which excessive milk comes out would prevent a baby from using his tongue correctly. Therefore, make sure you choose the right size nipple for your baby which they can hold tightly in their mouth.     A nipple which is difficult to suck and from which a baby does not get milk easily is not considered a good nipple. Appropriate nursing time is 10-15 minutes using normal sucking movements. The baby may get tired if it takes longer than expected. PIGEON has prepared nipples with 4 types of holes to ensure there is a right nipple for your baby. The average diameter of the nipples of mothers tested was 13-14mm, and PIGEON’s nipples are designed on the basis of this size and hardness of the nipples. Therefore, a baby can suck milk from them with a relaxed feeling.