I don't usually use flat flossers, I use "easy to reach" ones to get to the back teeth. What attracted me to them is that they are individually wrapped, which is handy for travel. I've never tried flossing with double floss lines, but after trying it on these I love how it cleans between my teeth and I don't think I'd want to go back to a single floss line. I didn't have any trouble getting my molars out either. The only thing I don't like about them is the little "brush". I don't mind that it's there, it just doesn't look like it works well or adds anything worth paying for. I don't think they have anything special or unique about them other than this brush. There are other double leash sets that come individually wrapped, but a lot of the options I've seen come in really big packages when they're smaller, so that might be an advantage for you too.
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