I purchased this because the hospital used the same product, and I've been using it for about three weeks. I don't use it every day, but there are days when I use it several times. I have disinfected and stored it. It has been disinfected, but please consider this only if you understand that it is a used item. Please disinfect it again before use. If you don't need the used nipples, please let me know. [Set Contents] ① Pigeon Baby Bottle KR-100 x 2 ② Pigeon Breastfeeding Realization Direct-Attach Nipple SS (for general newborns) x 4 (2 new, 2 used) ③ Pigeon KR Cap 01318 (Yellow) x 2 ④ Pigeon Breast Milk Consultation Room (with pin)