Nursing for many months is both wonderful (for those who like it) and riddled with varied little inconveniences. For instance, the need to constantly wear nursing pads: solution and new problem. Problem - the outer plastic layer of the disposable pads doesn't let nipples breath enough, which can lead to the dreaded cracked and sore nipples. Enter the solution - the washable nursing pads.
Medela makes lovely cotton pads. Cotton breathes. I've been using pads for several months and they work pretty well; they need to be changed as often as the disposable ones. The pads come with a useful little mesh bag for the washing machine. Plus, it's environmentally friendly I guess.