Cardboard is a thick, paper-based material made from layers of compressed fiber. It is widely used for packaging, shipping, and storage due to its lightweight yet durable structure.

It can be cut, folded, rolled, layered, woven, or shredded to create a variety of functional components. Highly versatile in upcycling projects, it serves as a base material for insulation, structural supports, containers, and biodegradable applications.

Due to its biodegradability and recyclability, cardboard is a valuable resource for sustainable design, reducing waste while supporting regenerative material cycles.