A wonderful reference list is at Keeper. They offer another product that I think is fine alternative to disposable pads. I make these nursing pads and granny rags out of leftover fabric from cutting my knits and flannels. The fabric is as chemical free as I am able to get. I encourage you to wash the pads or rags a couple of times before using.
Washing puffs the fabric and enhances the absorbency.
I sew these out of many layers of soft, absorbent cotton knit. No fuzz or lint to stick to the skin. These pads will help keep nursing breasts clean and healthy. Six or twelve pads are plenty for most moms. The bulk pack are great for buying groups, gifting to new moms to encourage nursing, or support groups to sell as fund raisers.