To verify if sunglasses are original, start by closely checking the packaging and branding details, as genuine brands always provide high-quality boxes, proper spelling, clear printing, and official logos without any blur or mistakes. Original sunglasses usually come with a brand authenticity card, warranty card, user manual, and a branded cleaning cloth, which are often missing or poorly made in fake products. Next, inspect the build quality—original sunglasses feel solid, well-finished, and balanced, with smooth hinges and no loose parts, whereas fake or first-copy sunglasses often feel light, uneven, or cheaply polished. Always check the logo placement and engraving on the frame and lenses; original brands engrave logos neatly and consistently, not printed or peeling off. Lens quality is another key factor—original sunglasses usually mention UV400 or polarized protection with proper markings and certification, while non-original ones may only claim it without proof. Price is also a strong indicator: if the deal looks too cheap compared to the official brand price, it is most likely not original. Lastly, the safest way to verify originality is to buy from authorized sellers or official brand websites, as local markets and unofficial online stores often sell first-copy or replica sunglasses.