Dr Brown’s 150ml Designer Bottles Jungle Twin Pack Dr Brown’s 150ml Designer Bottles Jungle Twin Pack is clinically proven to reduce windy colic due to Dr Brown’s unique 100% vacuum-free vent system. Dr Brown’s Options+ bottles offer an easy and comfortable way to feed your little-one, adapting to their needs as they grow. This bottle can be used with or without the removable internal vent system. Ttransforming it into a teat-vented bottle for more convenience. Use Dr Brown’s Options + bottles from birth. The unique internal green vent system continues to create 100% vacuum free feeding, which is clinically proven to help reduce wind related colic. The breast-like teat shape is correctly contoured for a proper latch and a more natural bottle-feeding experience. Perfect for switching from breast to bottle and back again. Each teat is specially engineered to offer the same consistent natural flow, so you and baby know what to expect in every feed. Grows with baby, allowing easy removal of the vent system when baby no longer experiences feeding problems. The teat venting creates a controlled flow, offering babies an easy and convenient way to feed at their own pace. The complete feeding system that grows with baby and helps alleviate the symptoms of windy colic. Features Anti-colic vent system is clinically proven to reduce colic Contoured breast-like teat for a proper latch and a more natural bottle-feeding experience Aids in digestion for a good night’s sleep Two vent options. One proven bottle. No need to introduce a different bottle once baby grows out of colic. Contains 2 x 5oz/150ml Bottle with Level 1 Teats Dishwasher (top rack) and steriliser safe.