My DS is 3.5 and the last few days has regressed into bedwetting, he has a cold so maybe its that.
Anyway, we have a full bed waterproof sheet but it isn't waterproof at the sides and he always seems to get it over the edge so the mattress gets wet!
I have some smaller flat sheets but the same thing happens, or he moves around so much that he's off the sheet (we co sleep)
IS there such a thing as a complete waterproof mattress cover that covers the sides as well as the top? or a waterproof mattress?