Each cavity cell size:3.1"X 2.2"X 1", it can make 120 grams of soap another words 4 oz soap bar can be moulded in each cavity. Heat Resistant Temperature -40 to 230 Centigrade. Food Grade Silicone(FDA Standard) Heath Safe Material and Reusable, Flexible and Reusable, Dishwasher safe, refrigerator safe, freezer safe, oven and microwave safe. Before or after use. Please clean the silicone mould in warm soapy water and dry it.