Corrugated cardboard is a strong and lightweight material made from three layers of paper. The outer layers are flat, while the middle layer is wavy, creating a structure that provides strength and cushioning. This design makes it ideal for packaging and shipping products, as it can protect items from damage during transport. Commonly used in boxes and containers, corrugated cardboard is also recyclable, making it an environmentally friendly choice. It is widely used in various industries, including retail, food packaging, and electronics, due to its versatility and cost-effectiveness.