I have sensitive teeth and need to use a soft toothbrush. Many soft toothbrushes don't have different-size bristles to clean well between teeth. For several years, I searched for a good, soft toothbrush that would thoroughly clean between teeth. I went though dozens of toothbrushes, usually throwing them away after a few uses because they were either too hard or didn't clean well, or both! Finally, I found the Floss Fusion toothbrush and it's perfect - soft with bristles that clean between and all around teeth! I will keep this one stocked in my bathroom cabinet. It's unbelievably effective and my teeth are loving the Floss Fusion!