These babies are dragged over your face after a shave. A product that has been around for centuries that have been replaced by mostly overpriced, pantsy smelling, artificial products, this stuff is so good, it is even used to purify water when you run out of it! Some more uses for the wonderful stuff here a Big stone weighing 110 grams and measuring 66x42x23 mm, it will last you a few years dependant on use.