The difference is all in the construction: Baffled box comforters have vertical baffle walls along the seam lines, creating a “box” of down in each chamber. This allows the down to loft more even throughout the chambers, maximizing heat retention and creating a flat finish. Bavarian comforters are sewn through both layers of fabric at the seam lines, preventing any down from shifting between chambers and creating a more quilted look. For more information about comforter construction and the benefits of each style, check out ourdown comforter guide.