Good quality, but potentially fragile if dropped; Works very well for rough feet
I bought these for my wife and me to use on our sandal feet that we get every summer here in Tucson.  It takes using it every day for about a week, once a month, and your feet end up being near-babysoft.  I like that they're wider than other feet scrapers/stones we have used in the past.  They make the chore of removing calluses and smoothing out discolorations much quicker.  I wish they were just a fraction more "gritty", but they really work pretty well just the same.  The only reason I took off one star is because the black scraping material appears painted on, i.e. it's not an actual "stone" like the typical callus removers.  What that tells me is that I have to be extra careful with it that I don't drop it.  I think if it fell in a plastic shower stall, it won't be a problem, but if you drop it a couple of times in a porcelain tub, it would probably chip or have a piece break off.  So it works great, is sturdy; just potentially not as sturdy as some other options out there.
Rating: 4 stars