This bottle is convenient and easy for babies to grasp‎.‎ It is fitted with TOTcare’s Soft Nipple that helps reduce colic and overall discomfort‎.‎ Air will always remain in the bottle and TOTcare’s soft nipple has accounted for this‎.‎ When babies suck the fluid‎,‎ a vacuum is created and fresh air flows into the bottle through the nipple’s base valves and fills this vacuum‎.‎ This will ensure that air will only fill the space as babies suck the liquid and therefore reduce the possibility of air leaking into their stomachs‎.‎ This feeding bottle has an indicator that will alert you when your baby’s feed is too hot‎.‎