Pumice stones are a natural beauty tool made from mixing lava with water and forming it into a light, yet abrasive, stone. While your skin is moist, either in or right after a shower or bath, rub the stone on feet, knees, and elbows to remove calluses and rough spots leaving smoother skin. When finished, apply an oil or moisturizer. Each stone measures approx. 4" L x 3 1/2" W x 1 1/2" H. 1 1/2" loop for hanging. After use, run under warm water and hang dry. Lava stones are sold individually. Stones do not come with hang tags. Stones come wrapped in plastic to protect the loop from getting lava dust on it. However, please note that some dark lava dust might still get on the white fabric loop. Lava stones are handmade and will vary and shape, weight, and size. And, might also have imperfections. All lead to their charm.