I used bamboo in one of my first quilts that I made for my husband and it bearded terribly while I was quilting it. The quilt had a lot of black in it so the bearding really showed. Since that bad experience, I won't use it again. It is a decorative quilt for his old car so don't know if it is warm or not and the quilt has not been washed. I love Quilter's Dream cotton batting.