Buy the right size heat shrink tubing beforehand. I'm going the for a semi permanent solution instead of worrying 24/7 if these collars are going to crack. I'm not exactly delicate with my IEMs (I'm not rough either), but they get thrown into my pockets, bag, luggage, whatever. I'll be surprised if those collars last more than 1 week.
Edited by stvc - 1/20/14 at 8:06am