Philips Avent Classic Teat Fast Flow Nipple 4 Holes for 6 Months+ It has an anti-colic teat that allows it to feed continuously. The air is released into the bottle rather than into the baby's stomach. The ribbed texture decreases feeding interruptions and pain by preventing teat collapse. | Uses: It is used it to carry liquids of your choice. | Product Specifications and Features: Clinically proven to reduce colic Use the Avent Anti-colic baby bottle nipples with the Avent Anti-colic baby bottle This product is not designed to be used with Avent Natural bottles A range of flow rates are available for your growing baby, newborn | Directions For Use: Use as directed on the label or as advised by your healthcare provider/ physician/nutritionist. | Safety Information: Read the label carefully before use Store in a cool and dry place away from direct sunlight Keep out of reach of children