This is a set of Milton sterilizing solution for baby bottles and pacifiers, and Pigeon breastfeeding-like nipples for baby bottles. [Milton] Milton detergent for one use Milton CP for three uses [Pigeon Breastfeeding-Like Nipples for Baby Bottles] SS: 2 pieces S: 2 pieces After each use, I would: Wash with a baby bottle detergent and a dedicated brush → sterilize in the microwave. There are no issues with use, but there is some wear and tear. The baby bottle nipples will be placed in a Ziploc bag. It will be sent via post. If you are concerned, I can change to a Takkyubin Compact delivery (+300 yen), so please let me know. Thank you!