The fabric is made of Cordura 1000D nylon fabric, which is authorized by INVISTA, and is specifically designed for top-level backpack materials. This is a functional fabric with high mechanical strength. The special structure of Cordura fabric endows it with excellent wear resistance, tear resistance, unparalleled strength, good hand feel, as well as characteristics such as lightweight, soft, stable color, and easy care. The surface of the fabric has a 4-level anti splash treatment, ensuring the safety of your backpack material. Note: Cordura fabric is a leading technology product. Under the same weight, the durability of Cordura fabric is twice that of standard nylon fabric, three times that of polyester fabric, and ten times that of cotton canvas fabric, respectively. In fact, due to the excellent fatigue strength and durability of CORDURA fabric, leading armies around the world are using this product to manufacture high-performance military equipment. Cordura has been separated from DuPont and is owned by INVISTA