Pigeon Nipple for Baby Bottle, Mother's Milk Realization Nipple, Size M, Set of 4 Purchased new in January of this year and used for about 3 months. The baby has outgrown them, so they are no longer needed. They were sterilized daily with Milton after each use. They show signs of use, but there are no tears and I think they can still be used. Please check the condition of the product in the photos before purchasing. The nipples will be slightly flattened for shipping. Thank you for looking.