Yes, there has many fake goods on the market, no matter what kind of cargo. To tell if the revo sunglasses are real or fake, it is really hard to tell. The real ones will be times higher price than the fake ones, firstly, the price itself will tell you the truth. you can buy it from proper channels, you must remember, you will get what you pay for! However, there still have some ways for you to get some reference. You can check the workmanship, the model types and specification are all printed on the metal legs of glasses. The writing of the letters is clear and neatly. There must have some documents such as certificate of conformity and instruction to prove the identity of the glasses. The box of glasses should be exquisite workmanship make. The glasses cloth's texture is flexible and soft, it must be superfine fiber, if not, e. g. nylon makes, and that must be the fake. Check the details; this is the way for you to consider the glasses' identity. Moreover, you can find some remark of the customers when you purchase it online. Believe you have foresight eyes to pick the real from fakes.