TO Briana: a Question

So you make your own cavy cozies?! What do you make them out of, like exactly what kind of materials, and what kind of thread? And what do you use for the "wool" parts?

I make my own cozies out of fleece that can be bought at most any fabric store. I use the sowing machine with normal thread and I've never had any problems with them. I don't use any wool - the fleece works perfectly. And they wash great in the washing machine.