Includes 4 Advanced Anti-Colic baby bottles - designed to reduce colic symptoms for less gas, spit up and discomfort Features the award-winning breast-like nipple for natural latch and guaranteed acceptance*, and a unique anti-colic venting system that draws air away from milk Heat sensing technology turns straw pink when baby's feed is too hot Microwave Steam Sterilizer uses 100% natural steam to sanitize baby bottles and other accessories in just 5 minutes Food and bottle warmer warms breast milk, formula and baby food from chilled or frozen Our Advanced Anti-Colic Complete Feeding Set contains everything you need to make baby feeding more comfortable and help prevent colic. Tommee Tippee Advanced Anti-Colic bottles are specially designed to prevent colic by reducing air bubbles in the milk, meaning 80% fewer colic symptoms** such as gas, reflux and fussing. This set includes our Steri-Steam Microwave Sterilizer which can sterilize up to 6 bottles in just 5 minutes, killing 99.9% of germs that may linger in bottles, pacifiers, and other baby feeding accessories. The Easi-Warm Bottle Warmer gently warms baby's feed, while the milk storage pots and insulated bottle bags help you keep baby fed on the go. Helping you Parent On *92% of more than 1200 parents who used our bottle nipple with their baby recalled that they accepted it within the first 3 attempts ** When we asked 210 parents who tried using this product to reduce their child's colic symptoms, 80% agreed the bottle had successfully reduced the symptoms (June 2017).