I prewash my Warm and Natural. I put it in the washer in hot water and keep pushing it down into the water because it will flost. I just soak it, and DO NOT AGITATE. Then I spin it out and put it in the dryer. It is easier to hand quilt because its softer. I also prewash my fabrics. If a fabric is going to shrink or color bleed, I want to know that before I use it in a quilt.