I bought these because anything but the "wrap around the ears" earbuds didn't fit my ears and wouldn't stay in place. These have three different sizes of foam covers for the ends that go into the ear, and two of the sizes are fine for me, stay in place, and the unit is adjustable under the chin. The sound isn't all that great, but that may be because my iPhone doesn't have a setting that complies - or it's just a matter of taste in music.