Hint hint! :)**UPDATE** - I?ve worn these cuff?s together literally every day and night for a little over 3 months now, and they haven?t fallen off once! Fit my headset, shipped quickly. I find that I tighten the chest straps quite tight and then once the reservoir has been emptied slightly (or if Im not using a reservoir) the pack slips around and rubs on my neck. Plug and go! I definitely recommend and would buy again In all honesty, it?s not much bass as they really say. I love that it was stretchable. I will be replacing them with more keens. Also, the brackets barely fit my frame.