I wanted to post an idea for liners before buying the materials. I apologize if this have been covered elsehwere, I could not find specifics about what is "inside" the liners.
I was thinking of making liners that had fleece on either side but on the inside (sewn in so it would not bunch up) a rectangle (same size as liner) of this
http://www.activeforever.com/p-3417-inv ... dpads.aspx
the bedpads sound very absorbent, are washable, have a vinyl layer on the bottom. I would put fleece on top of the pad and below the pad in a slipcover type way but actually then sew the pad right in.