The Bottom Line: Avoid these headphones if you want good sound quality.
These headphones were purchased for very little money. When I saw "Maxell" on the package I thought I was buying quality. I was wrong.
The headphones come in a small blue package along with an instruction manual and a small leatherette pouch containing the 2 sets of rubber tips (Small and Large). The medium sized rubber tips come already pre-installed. Changing between the different sizes of tip is not a problem. Just pop off the old one and push on the new one.
As soon as I had the earbuds in I noticed the sound was what you would hear with your stereo's treble and bass turned down low. The music just did not sound good. I tried a few different songs and still no real change. The bass was extremely hollow sounding and there was no feeling like you would get from a headphone with deeper bass.
The feeling of the headphones in your ears is like that are other in-ear style earbuds. Although I found the medium sized ones fell out of my ear when I moved. The large were too big for me though. Back to the store they went!
I suggest you stay away from these since they are a waste of money especially if you have high expectations.