Pura Kiki® wide neck soft spouts are designed to be the perfect transition from Mum or an infant bottle. Of course our spouts operate with both our infant bottle and toddler bottles; when junior outgrows the nipple all you need to purchase is a spout to convert your 150ml or 375ml Kiki infant bottle into a toddler sippy cup! Our soft spouts are crafted from safe, non-toxic 100% medical grade silicone just like our nipples. They do NOT contain plastic, latex, nitrosamine or BPA.