I have bought from
http://diapercuts.com/store/Default.asp before, also if you look at the "soaker" materials they are super absorbant. Look under the inner diaper fabrics and you will get a good idea of what some great wicking fabrics are to line the panties. Microfleece is probably the best option for our fur butts since the others can be quite expensive.. microfleece is too. Jo ann's will have sales on micro fleece periodically so it's worth looking there are at any other local fabric shops. Celtic cloths is a good place to buy from as well, I've heard good things about them.