I think those are bathing maths buddy, i believe the English word for what you're trying to refer to is whelping pads. The ones you got there are stitched al around, i've never seen whelping pads like that before. Anyways, i would try to find blankets for the doghouse, cotton, the rougher the better. Wash them every 2 or 3 weeks if you got a dryer. Good alternative if you don't want to use shavings or straw. Makes for a nice soft bedding for the dogs. And if they get moist you just hang them out over the kennel to dry every now and than.