Tommee Tippee Advanced Anti- Colic Bottle Starter Kit Blue is specially designed to help prevent colic by reducing air bubbles in the milk and to encourage a good latch-on during feeding. If you know you\'ll be bottle feeding your baby, and you\'re concerned about colic Tommee Tippee Advanced Anti- Colic Bottle Starter Kit Blue is the perfect set for you. The Advanced Anti-Colic bottles are specially designed to help prevent colic by reducing air bubbles in the milk and to encourage a good latch-on during feeding. 80% less colic The advanced anti-colic bottle is proven to reduce colic symptoms for less wind, less reflux and less fussing. The anti-colic bottle uses a unique, 3-piece anti-colic technology to pr optimum venting during feeding. Babies may develop colic symptoms if they take in too much air during feeding. With its unique anti-colic venting system, Tommee Tippee\'s Advanced Anti-Colic bottle helps stop air mixing with milk. Air is drawn through the vents in the venting wheel, down the venting tube and out of the star valve into the air space at the base of the bottle, rather than into your baby\'s tummy. The breast-like shaped teat of the advanced anti-colic bottle allows your baby to easily latch on and supports the transition between bottle and breast. The anti-colic venting tube has a heat sensing strip that changes colour if the milk is too hot. Simply dip the tube for 10 seconds to see the feed\'s temperature. Pink indicates that the temperature is too hot. The star valve at the base of the anti-colic straw keeps milk from travelling up the tube, meaning 80% less wind, reflux and fussing, but 100% more smiles. Tommee Tippee consulted 210 parents who tried using this product to reduce their child\'s colic symptoms and 80% agreed that the bottle had successfully reduced the symptoms (June 2017).