I got this for half price on NZSale, so it was only $4.50. Can’t really go too wrong for that price! And although it lacks some of the bells and whistles that some of the more glamorous foot files do out there on the market these days, I’ve come to realise that a bit of pumice does the trick!
It’s kind of ugly, lol, but it doesn’t need to be fancy to actually work... And another bonus is that it’s reasonably small so it doesn’t take up too much room in my bathroom.
I always have a pumice stone in the shower since I'm a daily foot scrubber. While this isn't my fave brand and it looks very plain it works. It just scrubs/buffs off the hard skin on my soles and near my heels keeping my calluses manageable. Now the nice thing about this plain one is that the tan colored build up isn't as noticeable as it is on my fave one which has a white pumice stone, which stains pretty quickly. I think if you want something more aggressive then you probably want one that's more coarse, but the Revlon one does a good job.
Tips: I like to scrub my feet at the end of my shower that way my heels have been softening a bit in the hot water and it's easier to buff away at the calluses.