Bibs anti-colic baby bottle teat: comfort, quality and safety for your baby. The hypoallergenic medical silicone teat with anti-colic design reduces air intake and helps prevent colic, bloating and reflux. The breast-like shape and the skin-like, soft material make it easier to switch between breastfeeding and bottle feeding and support a natural sucking movement. Anti-colic valve: Reduces air intake. Increased stability: Supporting grooves provide additional stability. Different flow rates: Available in slow, medium and fast. Fits the anti-colic bottles. Anti-slip texture: The special texture ensures a secure grip Care & Safety: 1. make sure that your microwave is set to 800 W (or equivalent) and that the water temperature is 100°C / 212°F. 2. place the bottle teats in a microwave-safe sterilisation box (e.g. a BIBS soother box) and fill it with water. 3. place in the microwave for 60 seconds. 4. allow the box to cool down before removing the soothers. Scope of delivery: 2 pieces.