Nuk Nature Sense Learning Bottle 6-18 Months is a bottle recommended for a smooth transition between breastfeeding and independent ingestion, characterized by its smooth and ergonomic wings and a non-slip waterproof base. It has an extra-wide and soft mouthpiece and anti-colic ventilation, making it possible to ingest similar to what occurs during breastfeeding, without pauses and preventing the entry of air (one of the causes for colic). Without BPA.