A customer who has purchased the reviewed product from Quill.
I love the rubber mushroom shape tip. It is so comfortable that you don't realize your wearing it and it comes in a small slim size. The other tips with the foam style irritates the inner part of my ear after a couple hours and it has even made soars on my ear. I have small ears so it is really hard to find tips that I can use, plus it helps with holding the headset in place. I wish they made the rubber style eartip for other models of Plantronics Headsets. The one thing I would suggest is that they make 3 different sizes instead of just two.
Other than that it has exceptional clarity and extremely comfortable.
I highly recommend to anyone that has to wear a wireless headset for 8 hours a day.