i used to wear a hat wrapping it around my ears coz heavy steps just meant ear plugs swinging about, the ones that came with the Zen Micro (1gb ) didnt stay in at all, ended up gettin some from the argos catlog, cant remember what they're called (theres no label on 'em exept a few E's), but they came with 3 or 4 different sized covers for the in-ear ( really in the ear!!) and feel comfertable. although i would have to agree that when jogging, the need to hear everything around becomes overwhelming after a while and these ear plugs being really effective as noise reducing, all i can hear is my self gaspin' for o2. for the price though....