Milk Bottle Realism (Brand Name) ◯ Contents: S size nipples x 2, M size nipples x 2 ◯ These were used one year and two years ago, and are mixed. I breastfed often, so they weren't used very much. ◯ Please understand that these are used items and have been stored at home. ◯ The tips of the nipples will be flattened for shipping.