Dr Browns Options + Starter Kit Suitable for use from birth (don’t wait until your baby develops colic), these bottles offer an easy and comfortable way to feed your little one, adapting to their needs as they grow. With the unique design, this bottle can be used with or without the removable internal vent system, transforming it into a teat-vented bottle for more convenience. 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. The Bottles grow with your little one which allows for easy removal of the vent system when your baby is no longer experiencing feeding problems, or if you want the convenience of a teat-vented bottle. The teat venting creates a controlled flow, offering babies an easy and convenient way to feed at their own pace. The Kit Includes: 2 x 150ml Options + Anti Colic Bottles 1 x 270ml Options + Anti-Colic Bottle 2 x level 2 teats 2 x Vent Cleaning Brushes Level 1 teats already supplied on each bottle