Start by conducting research on the brand of the jacket. Look for official websites, authorized retailers, and reputable sources that provide information about the brand's products. Check if the brand is known for producing high-quality and authentic items. Pay attention to any specific details or features associated with the brand's jackets.
Authentic jackets typically have labels, tags, and logos that are well-made and accurately represent the brand. Look for any misspellings, inconsistent fonts, or poor printing quality, as these could be signs of a counterfeit. Compare the labels and tags to official images or examples found on the brand's website to see if they match.