Our award winning Pura bottle is 100% BPA/BPS-free, environmentally progressive, and adapts to the needs of your growing child. The 150 ml (5 oz) bottle is perfect for wee ones and ships with a stainless steel collar, slow-flow Pura Natural Vent Nipple™, a silicone sleeve and a silicone nipple cover. As with all Pura bottles, this bottle can be used with nipples or sip spouts from a variety of manufacturers so you can be sure that your little one will not have any problems if you are switching from another bottle.