I bought mine several months ago when they were a TS on HSN. Normal earpods and airpods don't stay in my ears, and I have other bluetooth headphones, but wanted to try the bone conduction concept.
I like them. As other posters have said, they're not supposed to wrap around the back of your head, rather, they rest at the back of your neck.
I use mine mainly while walking, so don't know how they'd stay situated when running or during other more active exercise.
Mine came with a set of those roll up/insert/expand ear plugs, in case you want to be on total 'do not disturb' mode.
I found the controls a little difficult to master at first (kept having to take them off to pause/turn on & off), but now it's easy.