I used these for mixed feeding, with my first child until they were 3 months old, and my second child until they were 2 months old! They have been sterilized and stored at home, and are made of plastic. There are some minor scratches due to age, so I'm selling them to someone who understands that they are used items. Pigeon, 240ml and 160ml baby bottles, set of 2. - Brand: Pigeon - Capacity: 240ml, 160ml - Design: Tree illustration - Color: Clear/Green - Quantity: Set of 2 Thank you for looking.