We've just bought one of these from Mothercare and it claims to have a "non-PVC wipe-clean foam mattress" but the covering on it looks distinctly PVC. Does anyone know what the cover is made of? Or might it actually be PVC, despite its claim?

Also, we're borrowing a cot from a friend but need to get the mattress for it - are cots generally standard size or do we need to measure it for a mattress and will this mattress fit another cot when we move home to the UK next year? Or will that be another expense (not that you can put a price on baby safety!)

As always, this being my first pregnancy, I really appreciate your advice!

MamaT x