Gotcha. Thank you for that explanation. I actually quite like the sound of them with the Comply tips, so that's not an issue. I guess I'm just seeking a little more closed-ness for situations where more sound isolation is preferred, such as at the gym. My gym blasts music over loudspeakers so...

Does anyone have any recommendations for some triple flange ear tips? I've tried lots of single and double flange tips, but I still cant seem to get a good seal. The best are the Comply Sport foam tips for me, but I'm still not completely satisfied with the seal and sound isolation out of them.