I preshrink my batting to avoid that problem. I use Warm and Natural or Warma nd White for my quilts. I put it in the washer with hot water and let it soak till it is all wet and then just spin it out. Do not agitate. Then I put it in the dryer. after its' quilted and washed the first time, you will have that soft snuggle look of a quilt but without the large shrinkage that comes with that first washing.