Product Description Features Standard base feeding bottle. Shaped for providing an easy grip, during feeding. Removable base with an air valve for air to enter during feeding, providing an anti-colic feeding system. Stable base. Easy to clean. Transparent for hygienic cleaning. Made from the high-quality plastic material. Teat is made from medical grade silicone, which is also volatile and nitrosamine safe. Guaranteed not to perish odorless tasteless and non-toxic. Age limit 3m+