The NUK First Choice soft spout made of silicone is pleasantly soft and does not leak. It features the NUK Air System, which balances the air pressure inside the bottle. This prevents colic and discomfort caused when the baby swallows air.
NUK silicone spouts are made from high-quality synthetic material. The transparent silicone material is easy to clean and highly resistant to high temperatures. Even direct exposure to sunlight or fats does not alter it. It contains no harmful substances, is boil-resistant, odorless, transparent, and has a smooth surface – it possesses all the advantages of a good spout.