Combining the wooden lid and aluminum body creates a bento box that combines the best of both worlds. The wooden lid is made from natural Tosa ancient cedar, allowing you to enjoy the beautiful texture of real wood, with each piece having a different grain. Wood has moisture-regulating properties, absorbing excess moisture and allowing you to enjoy delicious rice. The aluminum body has an anodized surface, which increases corrosion and abrasion resistance and helps keep it beautiful and clean. This is a product that you should definitely try and experience for yourself.