I honestly think a lot of people don't know how to properly wear the Buds Pro. The first couple weeks I had mine I wore them completely wrong and they were always slipping out until I realized I was angling them wrong. The mic should be facing towards your tragus and the vent is at a 45deg angle towards the back of your outer ear. The body of the Bud should almost contour to your outer ear, hope this helps. Once I started wearing them correctly they feel very secure in my ear.