of course it is natural.. but i personally find it a bit grim and wonder why mothers can't just find somewhere discreet to do it, of if they're caught on the hop, then plan better and express the milk into a bottle before you leave your house.. I really don't wanna see it, and yes - especially not in a restaurant etc. People feel they have to be all 'politically correct' about this, but i find it uncomfortable and i'm female!!