This is a natural pumice like stone that catches and removes pilling from your hand made items. It renews the finish of your garments naturally and easily. Since 1986, these have been favored among wool wearers around the world.
I've personally started using this product on both store bought sweaters and hand made ones. You just gently rub or swipe the stone down your sweater, and the pills just peel off and pile up! It's amazing. As long as I live, I will never shave a sweater again!