I know fleece as a fabric works well as a cover, so I'm thinking of knitting a fleece soaker for ease of washability. I got some of the fleece yarn made by Knit One Crochet Two- it makes a nice soft, thickish swatch and I'm hoping it will work to cover a diaper. Anyone try this before? It's pricer than I would usually spend on this amount of yarn so if this isn't a good idea I can use it for a different project.