Hi! I am brand new to this board, but I too am making fleece blankets. Most of them are two sides of polar fleece with polyester batting in the middle. My family loved them so much that I took some unfinished quilt tops and added batting and backed them with fleece, then tied them. Everyone loves them because they are so warm and snuggly. Not traditional, but enjoyed. Sorry to ramble. I haven't prewashed the fleece, but the ones I have washed came out great. Happy Day! :lol: