They are elaborated from highly resistant medical silicone and perforated with laser, which ensures that every hole is exactly the same in each level, thus providing an exact timed flux. The hole is round except for the one dedicated to cereal supply, which is Y-shaped. They are sold in set of 2 units in the following sizes: standard and wide neck. Level 0 (Premature Infants).
Standard and wide neck teats: level 1 (Newborns).
Standard and wide neck teats: level 2 (+3 months).
Standard and wide neck teats: level 3 (+6 months).
Standard and wide neck teats: level 4 (for babies already eating solid food)
Standard and wide neck teats: for cereals.
