I've been vegan for almost 10 years, and my first thought when reading about these was "how can wool be ethical?" But after educating myself on traditional wool farms and then learning about this wool, I was convinced that these dryer balls were the way to go. I was sick of using dryer sheets, and didn't like the idea of plastic dryer balls, so I decided to give these a try. They definitely make clothes and towels much fluffier, and I feel good about using something much more eco friendly than plastic. The only thing I've found is that I can't really reduce the dry time like it says, my clothes were still damp; but that could also be a problem with my dryer, not really sure. I would definitely recommend these to people!