Selling because I no longer need them after sizing up. Anonymous delivery ◎ Immediate purchase possible ◎ [Contents] Size: M, 3 months - Material: Silicone Quantity: 5 pieces Purchase date: May 2025 Usage period: End of June 2025 - End of September 2025 Used in rotation, each time washed with Milton detergent and sterilized with Milton Child-Proof. There are no noticeable stains or chips, and they are still usable. Please refrain from purchasing if you are concerned, as they have been used. Please purchase if you understand. I will wash and sterilize them with Milton before shipping. The nipples will be slightly compressed for shipping purposes. Please feel free to ask if you have any questions.