Sound is not stable. I went looking for a larger replacement earpad replacements - I found these, and they work great. Not going to go through the hassle of the return since it is so cozy. Overall, very impressed with these mics. Ultimately the squeaking was way too much and I returned them. I like that it is flesh colored for a Caucasian person but it should be offered in a dark shade for people of color. Unfortunately I cannot get the microphone to work with calls, only sound, which means I need to unplug them completely to make calls. Physics are so on point. cheap plastic that look tacky. He asked to take them off as soon as he tried to stand in them because they were so uncomfortable.