The wired ones more or less fit in my ears, but I found that when I was walking or doing any kind of exercise they fall out in less I use the little plastic thing to cinch them up.

I was worried I have the same problem with the AirPods but they work just fine for me. I guess not having that cable tugging on them makes the difference.

But the old ones worked if I was just sitting still. That didn't even work well for my brother and he wasn't able to use AirPods either.