This shaving scuttle is a bowl within a bowl. This allows you to fill the bottom chamber with warm/hot water and then you create your lather in the top vessel. The bottom bowl will keep your lather warm and ready -- as the ceramic holds the heat.You can count on this bowl whipping up a luxurious lather. The heavy stoneware holds heat, wide mouth makes it easy to whip, and the sides are designed to keep the lather in. The smooth glaze is waterproof and food, microwave, and dishwasher safe.