Tommee Tippee Advanced Anti-Colic Feeding Bottle, 260Ml X2 (Blue)This Is No Ordinary Bottle. It Works A Little Differently From Regular Bottles To Help Combat Colic While Ensuring A Comfortable Feeding Experience For You And Your Baby. The Unique Anti Colic Venting System Draws Air Away From Milk. Plus, Tommee Tippee Venting Tube Comes With A Built In Heat Sensing Strip That Gives You Extra Reassurance That Milk Is Not Too Hot For A Comfortable Feed. And The Anti Colic Teat Flexes And Stretches Naturally To Ensure