Nuk Bib First Choice + Snow 0-6M Silicone Teat is natural and suitable for the jaw: The special NUK shape is like the mother's breast during breastfeeding. Extra soft: with the soft zone, the teat adapts optimally to the baby's mouth - for a natural sucking sensation. Reduces colic: the NUK Air System Anti-colic system minimizes baby's colic caused by ingesting air. Clinically tested.