If you are planning to, or currently do breastfeed then you may have discovered a variety of breast pads options available.
I admit for my first baby I just carried on using single use disposable ones. I never investigated reusable and ended up feeling ashamed about the amount of waste it generated. I probably got through about 500 pads!
Each box contained about 50 pads and each pad is wrapped individually in plastic.
So, for my second child I purchased reusable pads. I bought a set from Jojo Maman Bebe which have served me excellently. They come in a little mesh bag which you can store and wash them in.
They also fly pretty well if attempting to use as a frisbee, as the kids discovered accidentally!