I buy 90 wide batting on the roll and try to buy mostly the same batting. I only sew the same type of batting together. My lap quilts are about 50x60, so batting would need to be about 58x68. I sometimes load with the full 90 inches or other times I cut it. If I load with full width then I can have a 26 inch strip left. Two or three of those can be sewn together or onto another piece for either a baby quilt or to widen a piece left from an extra wide and long twin to make another lap.