Ray-Ban has been manufacturing sunglasses for more than 80 years, and as one of the most popular brands on the market, they can be on the pricey side. When shopping for Ray-Bans, you need to make sure you get what you pay for. Numerous knock-off companies manufacture replicas, and dishonest dealers sometimes try to pass them off on unsuspecting buyers. If you're in the market for a new pair of Ray-Bans, make sure you know exactly what to look for to ensure you don't wind up with a pair of fakes.

Look at the box your Ray-Bans came in. There should be a recycling logo, as well as a semi-permanent sticker on the box, including the serial number, manufacturer and distributor details, lens and frame type, and the model number of your specific style of sunglasses. If this sticker is missing, the sunglasses in the box are probably not genuine.

Inspect the case they came in. There should be a gold logo engraved, not painted, on the case that says "Luxottica." If the logo is painted or missing, chances are the sunglasses in the case are a knock-off.

Hold up the sunglasses and check the engraved Ray-Ban logo, which is an interlocking RB, under the bridge of the nose-piece. When holding the sunglasses upside down, the engraving should read right-side up. If it is upside down, you may have a pair of fakes.

Check the right lens for the RB engraving. If it is above the hinge, your Ray-Bans are authentic. If the engraving appears below the hinge, they are probably fake.

Inspect the rubber quality on the earpieces and frames. Quality rubber is used on authentic Ray-Bans and should feel chalky to the touch, not sticky, stiff or slick.

Test the quality of the authenticity card that comes with the glasses. Not only should it be printed on high-quality card stock, it should be free of grammatical errors and typos. The ink should not smudge or smear, which you can test by running your finger along the printed card.