Slow Flow Teat for 0-3 Months- teats are designed to encourage seamless transition from breast to bottle feeding, minimizing nipple confusion for your babyOff-centre teat promotes upright feeding which reduces the risk of milk back-flow that cause mid-ear complicationsElliptical-shaped silicone teat closely mimics a mother's breast to simulate a real latching experience, making combining breast and bottle feeding possible.Built-in anti-colic air vent reduces unwanted air intake and safeguards your baby from a tummy upsetPrevents bubbling of milk and saves precious nutrients from oxidation. Safe in sterilisers, warmers, dishwasher, microwave, boiling water and freezing.