The GB/T 3903.41 - 2008 standard specifies specific test methods for the folding performance of footwear tops and linings. The standard specifies the requirements for testing equipment, such as the specifications of the folding tester, and elaborates the operation process, including the repeated bending of the footwear sample under certain conditions. The bending performance directly affects the durability of the footwear tops and linings during the bending process of daily wear. Through this standard, manufacturers can accurately detect the mass of the product, ensuring that the footwear products can withstand frequent bending, extend the service life, and provide consumers with durable footwear products.