Comfort was ok. I didn't notice a huge difference in how my brain sounded and how it worked in terms of attention, or maybe too much of it. (I also use a different set of ear tips.) I think I have smaller openings for my ear canals as I have to use the smaller tips on all my other headphones and ear tips to have any hope of staying in. then I decided to try them and one fell out. (I also have issues with something in my ears when I eat because exercise seems to push things out of my ears.) It was an expensive little piece of plastic that could get lost, especially within two weeks of purchase.
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