I'm looking to buy a roll of liner to change my 6 month DS on. I've been using kitchen roll but it's not ideal. If I don't use roll on top of the mat, he manages to wee all over, then I have to change his clothes and when he has (frequent) diarrhea it's even worse. Basically I want a roll of changing mat liners, waterproof on one side, absorbent on the other, and not costing the earth like Pampers and other individual disposable nappy liners. Any ideas? Otherwise I am thinking to develop a product myself. Thanks.