Most of the ones you find will have the “handle” parallel to the floss. There are some out there where the handle is perpendicular to the floss, but they’re a bit harder to find on store shelves. I found that the latter make it much easier to get to the back teeth, but I do just fine with the former, too.
I’m going to give those another try. My mouth is tiny and my fingers are stubby (thanks dad! ;-) But you get way more crap out with floss.
Most of the ones you find will have the “handle” parallel to the floss. There are some out there where the handle is perpendicular to the floss, but they’re a bit harder to find on store shelves. I found that the latter make it much easier to get to the back teeth, but I do just fine with the former, too.