If your down comforter (not made by us)
Eliminate Shifting by Top-Stitching a Comforter into Squares
All About Down™ can redistribute the down and top-stitch (or quilt) your comforter into squares, sealing the down in place. Usually the comforter is warm enough once the down has been patted back into place and more down doesn’t need to be added. If you do want more down, make that decision before the squares are sewn because it can’t be added afterwards.
(The comforters we top-stitch most often are sewn into baffled squares. We neither sell, nor recommend buying these down comforters.)