I found it by chance in pet where this material was demonstrated. I hesitated because my greyhound has so little fat that I was afraid of hurting her. But ultimately, it's going very well, just do it very gently, not to support. It's amazing all the hair that can be removed and my dog lets him do well, so it's ok for her. I wondered if finally it did not cut the hair a little, so my husband tried on his legs. Actually no, it picks up only the dead hair. With this tool, I also removes a lot of undercoat, which I could not do with the brush. The hairs do not fly more when my dog shakes ... and yet I brushed every day or several times a day because she loves it. This removes cleanly Furminator hairs that remain well hang in the comb teeth, so no dirt everywhere. Can be removed from the pile manually or by pushing the button. The shape of the tool allows a comfortable grip and it is very handy. Perhaps an articulated head (much like razors for men) would not hurt to follow the contours of the muscles. Anyway, I'm really satisfied and I feel that this device has a visible effect on the hair of my dog that I find most brilliant. Great buy, it's worth every penny!