Double-Layer Design: The two-layer design allows for more efficient use of space, enabling the storage of different types of items in an organized manner.
Variety of Materials: Common materials include plastic, metal, and wood, allowing users to choose based on their specific needs.
Transparent or Semi-Transparent: Some storage boxes are made with transparent or semi-transparent materials, making it easy to see the contents without having to open them.
Mobility: Some double-layer storage boxes come with wheels, making them easy to move around and clean.
Stackable: Well-designed double-layer storage boxes can be stacked on top of each other, increasing space efficiency.