I bought a kit for a baby blanket that had minky, flannel and cotton in it. It was to be cut into squares and sewn into block borders to go around the flannel center panel of flannel, alternating the minky, cotton and flannel squares. Also the cotton was to go around the flannel center panel as a border. The back was flannel and no batting used. I didn't have a problem sewing it together but haven't washed it yet. If different materials come in a kit I don't see why you can't put your own together.