Chu Chu Nipple can fit Pigeon. However, Chu Chu PPSU milk bottle is tailor made for not releasing toxin ga wor!! So don't need to change the milk bottle regualrly.
I personally think it's not very expensive as it's safe for BB ma, think one BB clothes maybe already equal to one milk bottle wor!!
I use "white silcon nipple", you can check UNY, heard that they will have discount this week!!!