These unique shells are perfect for candles, soap dishes, bath salts, candy dishes, bowls, or anything that needs a tropical feel. Standard size is oval approx. 4 x 5 and have a sanded bottom so they should not tip over. These are very consistent in size and shape. Hold approximately 6 oz of wax. We recommend lining the shells with aluminum foil before pouring so that your wax will not leak out of any cracks that may be in the shell.