Tommee Tippee Closer To Nature Advanced Anti-Colic Feeding Bottle For 0 Months+ Babies is the new advanced comfort range from Closer to Nature is proven to reduce colic symptoms. The bottle has unique 3-piece anti-colic technology, draws air away from milk and the star valve keeps milk from travelling up the tube meaning 80% less gas, spit-up and fussing. The air vents down through the tube and into the air-space at the base of the bottle, completely bypassing the milk. Plus, a built-in heat sensing straw gives you extra reassurance that your milk is just the right temperature so both you and baby can feed comfortably. The brand recommend changing your bottle teats every two months and you should change them immediately if they're damaged or weak. This award-winning brand was launched in the UK over 50 years ago and was founded with one simple goal - to make everyday life just a little easier for parents around the world. World-class research and development, baby-led products are what makes Mayborn Group a world-leader in products for parents. Tommee Tippee is here to enable parents to embrace and enjoy the roller coaster ride of bringing up a baby.