Dr Browns are the only bottles that offer a fully vented, vacuum free bottle, which helps to relieve babies suffering with colic and as you know Isla had this in her first few months. We were sent the fabulous Newborn Starter Kit, which contains: microwave steriliser with tongs, 3 x 240ml bottles , 2 x 120ml bottles , 2 x level 2 teats , 2 x level 3 teats , bottle brush and 2 x travel caps. It retails at ยฃ49.95 and you can buy it here: http://www.breastpumps.co.uk/acatalog/Gift_Set.html. So how does the vent system work in these bottles? When babies are given a bottle of milk they suck it through the teat. As the milk leaves the bottle, air enters in through the vent to take the place of the milk. Dr Browns bottles have a patented internal vent that allows the air to enter and directs it to the…