Pigeon PPSU SofTouch Wide Neck Feeder is specially designed for babies with M size nipples. The opening of the nipple is Y-cut which allows milk to flow out consistently and gradually, as babies are yet to develop jaw muscles, thus the nipple is designed to support their sucking ability at this age.Global No.1* Nursing Bottle Brand, trusted by mums all around the worldHigh-Quality Body Material: Made from Polyphenylsulfone (PPSU) material with high heat resistance and impeccable durability. PPSU is widely used in manufacturing medical and food-contact products. The bottle color is the material’s natural color.Improved Softness: Smooth silicone nipple flexes and mimics a mum’s breast which results in easy latching and seamless breast-to-bottle transitionLatch-On Line: Perfect solution for latching issues! It guides the mother and the baby in an appropriate latching positionAnti-Colic System: Air valve design on the base of the nipple which allows a constant flow of feed with less ingestion of air; designed for tiny tummies.Easy-to-clean: Transparent body for perfect and convenient squeaky cleansing.BPA and BPS-free material makes it safer and healthier for babiesBased on extensive research on feeding, the 3 key factors are involved in a baby?s natural sucking behavior: Latching onSucking (peristaltic tongue movement) SwallowingRecommended for: 3+ monthsTeat size: M, Y-cutSterilization Method: Boiling, Steam, Chemical & UV