Work well and fit well. - ISOtunes Sport OPMOD CALIBER True Wireless Tactical Earbuds With Bluetooth, 25 NRR

So far I'm very satisfied with these. They come with numerous ear bud sizes so you can find what works for you to find a comfortable fit. They hold a charge for a good amount of time and the sound reduction is better than some other ones I had prior to these. I would definitely recommend them.