Orthodontic shaped teat with a distinct soft zone moulds gently to baby's palate, providing plenty of room for tongue and jaw movement; 99% of babies accept this teat* Suitable for combination feeding, with an extra wide lip support that simulates breast feeding as closely as possible Built-in Temperature Control indicator shows when milk is too hot Innovative Anti-Colic vent helps prevent the harmful swallowing of air Wide bottle neck allows for easy filling and cleaning; sealing disc and protective cap helps prevent leakage