This is a set of 7 Pigeon breastfeeding nipple size M. I used them for 3 months, starting in April 2025. There is no damage to the nipples, but they have been used, so please refrain from purchasing if you are looking for a perfect item. They show signs of use, but I think they can still be used. When shipping, I will flatten the nipples as shown in the third picture. Please understand. They cost about 750 yen each when purchased new.