Pigeon Mother's Milk Real Feeling Nipples for Baby Bottles, One of each size One of the two nipples in the package was used, and the other is not planned to be used, so I am selling it. Brand new, unused. S size: From around 1 month old L size: From around 6 months old Regarding packaging: I plan to ship via Yu-Packet Post Mini, so I will take the nipples out of the box and slightly compress them for shipping. Immediate purchase is welcome. If you have any questions, please feel free to comment.