[CoryGillmore]

Mine do. It's slightly annoying. Or at least I find the fit of my IER-M9 seems to vary depending on the time of day. Which would seem to suggest there is some variance in the size/shape of your ear canals throughout the day.

The IER-M9 is the best IEM I've ever owned in regards to fit/comfort and sound. But even still I still find myself constantly having to eff around with fit/seal. I find that early in the day the fit is too loose but the more I wear them or the later in the day the better it gets.

 

[Cevisi]

Somehow yes i have the felling that my canals are smaller when i wake up and gets bigger over the day

 

[CoryGillmore]

Somehow yes i have the felling that my canals are smaller when i wake up and gets bigger over the day

That's strange I feel the opposite happens with me! They start off bigger and my IEMs fit more loosely and then it's like my canals adapt or constrict to the shape of the nozzle over the course of the day.

 

[Damz87]

Yep, I notice mine seem to widen throughout the day. It’s the most obvious with the IER-Z1R for me because of it’s already awkward fit.