In response to our customers' suggestions, we designed these bowls for generous servings of hearty soups, chowders and chili. The durable, heat-retaining porcelain vessels are oven safe for melting the cheese topping of gratinee soups or baking the pastry toppings for soupe en croute. You can even use them for baking pot pies. Made of high-fired porcelain. Microwavable; oven and dishwasher safe. Set of four.