What is ISO for shoes?

ISO is a footwear testing standard that covers the construction and manufacture of footwear, making the protective sole and heel an integral and permanent part of the shoe, ensuring the quality of the lining material and the upper material of the shoe. Test method for the determination of the resistance of elastic materials for footwear to repeated extension.The standard contains requirements for evaluating the performance of footwear, including the tensile properties of the laces of the finished shoe, the impact resistance of the heel of the finished shoe, the abrasion resistance of Martindale and the colorfastness of the lining material, the DIN abrasion resistance of the sole and the abrasion resistance of AKron, etc.