· Unique smooth flow bottle nipple design allows baby to control the speed of the flow of milk for colic-free feeding· SafeTemp Indication: thermometer icon on bottle changes color when milk is too hot· Accepted by 98% of babies, based on market research, 2019, tested with 145 bottle users· Bottle nipple mimics the shape of mom's nursing nipple during breastfeeding, for a smooth transition from breast to bottle and back· Wide neck bottle is easy to clean and dishwasher safe