A major pizza delivery chain has re-designed its pizza delivery box so that it will keep the pizza hotter for longer and ensure that the crust remains crispy.

The newly designed corrugated pizza box traps more air to insulate the product. There is also a special `crisp sheet` onto which the pizza is placed inside the box also made from corrugated with fluting that provides a better base to keep the crust crispy as well as a surface on which to keep the pizza pie hotter after it is removed from the box ready for serving at home.