it worked! The size, shape, battery life, everything about it is perfect. The set up was super easy, just turn them on and click on them when they popped up on my phone screen. Noise cancellation was the main reason I bought these, and they were easy to install on my HyperX Cloud2 headset. These were great! The end caps are plastic. They were my go-to shoe for all of our going out nights and shopping days. First I tested them using the regular headphone jack on my Mac, and the sound was just fine. Ordered the size I normally wear but if you wear a 9. Basically had to tape the liner to the new piece as it is not a perfect fit for the rubber liner.