Designed to mimic natural feeding and tailored to the sucking patterns of different stages. Stage 1 teat typically suits newborns to 3 months and offers a slower flow. Stage 2 suites babies from 3-6 months and Stage 3 teat typically suits babies aged 6 months+ and offers a fast flow; comes in a twin-pack. Made from silicone. BPA, Phthalates and PVC free