A:Answer These are incredibly secure in the ear. Part of the noise cancelling ability these have is not only the active power noise cancelling, but also that these completely fill your ear canal and act much like a plug to prevent noise from entering. I love these, and if I had any complaint is that they are so tight and secure inside the ear canal that my ears can start to get a bit sore after wearing them a long time. I do not run, but I travel a lot with them. On and off airplanes, gathering luggage, on and off shuttle busses, rental cars etc - all while wearing them and have never felt like they would fall out at all.
