Yeah, this is another one of those items I just bought on impulse. Sounded real good in theory: Use it as a squeegee to just wipe the water off of the surface of the car after washing. Supposed to be of "medical grade" (whatever that is supposed to mean) silicone which will not scratch your paint surface. Well, maybe not, but if that blade catches any grit or dust, and drags IT across your paint, that certainly will scratch the surface. I have some scratches to prove that one. Granted maybe there is some sort of technique for using it that I am not aware of, but it only took my getting a couple of scratches and I "retired" that sucker. I guess the same thing can happen with using a cloth to dry the surface, but so far I haven't seen that happen to me. Personally I think the blade would be more likely to hold that grit directly against the surface where a cloth may be more inclined to LIFT it off of the surface. Beats me, but I learned this lesson the hard way.
FWIW....... and YMMV......
FWIW....... and YMMV......