Depending how thick you want your rug you can also use yarn for a few rows then a row of fleece.Just fleece packs down into a thick rug.If you're using raw fleece you will need to wash it at the end, a few soaks in the bath then hot wash to get the grease and smell out. Choose a hot spell, it'll take a while to dry thoroughly.Have fun, they weave up quickly once you get the hang of it and use up lots of fleece.