Prevention: 1. Asian size is 1 to 2 sizes smaller than European and American. If your size is between two sizes, please choose the larger size. Please allow 2-3cm differences due to manual measurement. 2. If you don't know how to choose the size, please check the size chart carefully before purchasing the item, please contact our customer service. 3. You know that different computers display colors differently, the actual item's color may be slightly different from the following images.