Review (5/5): If you are an athlete and shave your hands before you go out
This is by far the best for removing calluses from your hands. I'm a CrossFit athlete and coach, I use this a few times a week. I have tried other brands but this is the best by far. I tell all of my athletes to get this brand because it does the best job and the handle is much more comfortable, especially when not using your dominant hand.