Use The bottle is anti-colic, designed to prevent leaks and spills. Air valves in the nipple help prevent air swallowing and the occurrence of ''infant colic''. The patented Nuby nipple system massages gums and eases the teething process. How to take - Wash and boil nipples and bottles before use. - When heating liquids in the bottle in a microwave oven, the nipple and bottle cap should always be removed. - Consult your doctor about the most optimal method of bottle feeding. Contraindications - All nipples can wear out. To detect cracks, check each nipple by stretching it. Replace nipples if they become sticky, stretched, or show other signs of wear. - Do not allow the child to take the bottle to bed and do not leave the baby alone for long during feeding. - Prolonged consumption of milk, formula, juices, or sugary drinks can cause tooth decay. - Never pour carbonated drinks into the bottle; the resulting pressure can lead to leakage. - The bottle cap is not a toy. Before using the bottle, remove the cap and place it out of reach of children. Use only under adult supervision. - Do not boil in a microwave oven. Storage The bottle is made of impact-resistant plastic, free of BPA. It can be boiled and safely washed on the top rack of a dishwasher. A microwave oven is suitable only for heating liquids.