This shoe is a standard size for leather shoes. Recommendation: For example, if you wear size 41 in sports shoes, buy size 40 for this leather shoe. If your feet are wide or fat, buy size 41. If you usually wear size 45-47, buy according to your usual shoe size. If your feet are wide or fat, order one size larger. 3. After-sales issues? Answer: Our shoes comply with the national three-guarantee policy, offering seven-day no-reason returns (without affecting product resale) and a 15-day exchange service (without affecting product resale). If there are any issues with product quality, we will take responsibility until the end. Please rest assured when purchasing. Note: All data in our store are obtained from merchants or self-measurements; different data may have certain deviations due to varying testing environments; some data, such as "XX% higher," refers to the comparison result of this product with specific products in our store, not numerical values.