My girls both had basic mattresses that came with their bunks so when night time potty training we just used the pampers bed sheets,
My son has a mega expensive mattress on his bed and tonight decided no more nappies, but I really don't want to ruin this mattress at all.
The girls ended up having new mattresses after training due to the pampers sheets moving so they got wet.
Can I ask what decent sheet you use to fully protect the mattress? I can't use a PVC sheet as he is a sweaty kid. I don't mind paying a little price for it as long as it does the job!