Check out our Pura Kiki 5 oz. Infant Bottle and Pura Kiki 9 oz. Vacuum Insulated Infant Natural Stainless Baby Bottle. The bottles are safe and an environmentally conscious choice for your baby and toddler. The insulated bottles keep liquid warm or cool for up to 6 hours. BPA, PVC, and lead free. This bottle grows with the baby and easily converts from an infant bottle to a sippy cup or straw bottle by simply swapping the nipple. It comes with a lifetime warranty on stainless components. A must have for all babies and Infants.