Not a great product for me because of the above problems, mainly because the cotton started falling apart into little stringy bits, which I didnt like at all. I wouldnt buy these again because they just don't work properly for me.
I bought these because their cover said they are sterilised and that caught my eye and they were on special too.
The individual wrapper is very difficult to pull apart and open. The cotton liners are a great idea, but they became stringy and started fraying after a couple of hours of usage, so they arent good enough to wear a full day.