I use the arm band too. I just wrap it several times around the band before i put it on. Use them for running, CrossFit, work, etc. I ran with the iPod ones as well, but I've purchased 3 of them over a year and a half (could be me, but I haven't broken my sonys yet). They seem to break down pretty easily - either from sweat getting inside, the bud actually falling apart, or the cord coming out of the bud. Also with the ones I posted, it makes a nice seal against the ear to help with sound quality.