I have noticed that my wrist doesn't hurt anymore so it's obvious that the shape of the RADIUS handle does help ergonomically. Before discovering RADIUS I was using an automatic toothbrush. I have also tried the Kidz RADIUS Toothbrush since I am a small woman and now I use both, the Original and the Kidz. Thanks again for coming up with a great product that benefits everyone in so many ways.
I also like your floss a lot. I believe the less chemicals one puts into their body, the better their health is. So glad I discovered RADIUS!!!
Sandra La Luz
Fallbrook, CA