Replacement Dr Browns nipples / teats, available in levels to suit a growing baby, or for replacing teats that have worn, been damaged or lost. Material: Made from super soft, high-grade silicone which is BPA-free and contains no PVC, lead or phthalates Size: To fit standard (narrow) neck bottles Level(s):Available in the following levels/flow rates - Level P - for preemie babies (limits the flow to tiny mouths) Level 1 - for newborns 0+ months Level Y - for babies 9+ months (utilises a 'Y' shaped opening to allow for greater milk flow) Note: The above ages serve as a general guideline for choosing a bottle teat / nipple. A teat / nipple should be chosen to match baby’s feeding style, regardless of age. Quantity: Available in a pack of two (2) teats