I was concerned about feeling the headphones through the mask and not being able to sleep in my usual position (mountain climber, the hand's down comfiest position), but they really are unnoticeable.
The straps are also fully adjustable for a perfect fit, to the point where I don't need to bother with a bra (but def do need to bother with my beloved silicone Nippies lololol). I got it in the waist ...