Does anyone know of any such cap system? Obviously you would need to change the teats etc for various stages but I'm struggling to find anything.
Ideally also needs to not have one of those non drip valves (or at least the sort of vavle I can take out), no straws or anyother bots of plastic that can be bitten or chewed of.
The closest I have come is this but it doesn't have a lid?!?!?
Am I asking for too much here?