I have a chip on my shoulder about this one. Just looked at pram/carrycot mattress and although it's second hand it's in 'good condition' and ought therefore to be ok to use, according to recent reading. BUT it's made of the most disgusting foam rubber, with a sort of weirdy dry weave top sheet thing. I can't stand the idea of anybody sleeping on something so chemically, whether new OR second hand. I know you can get swanky organic natural mattresses, but I just wondered what about buying a nice new pillow and using that?? I know they're more puffy but maybe I could make a different cover for it or something? would really welcome other opinions on this.