2 x 80ml 25oz Advanced Anti Colic PPSU Baby Bottles comes with a small slow flow nipple which is suitable for babies of 03 months PPSU Polyphenylsulfone is a type of high performance polymer It is a plastic but has the benefits of glass which is a perfect material for baby bottles It is incredibly durable temperature and fall resistant Which does not absorb odor or color and you can sterilize without any deformation Breastlike Shaped like a breast teat for easy latchon soft smooth silicone teat feels closer to skin and flexes like mum Comfortable feed Teat design prevents collapse so your baby can enjoy an uninterrupted feed Anticolic Sensitive valve on the teat opens to allow air into the bottle which can eliminate excessive air flow and prevent symptoms of colic Easy to use and clean 55MM wide neck bottles make filling and cleaning easy with only a few parts for quick assembly