Still, if Levi’s is what you’re after, experts have tips for you. First, do research on the specific styles, so that you know what to look for. The most sought-after style is the brand’s original 501s, which are straight-legged, mid-rise jeans with a signature button-fly closure. 505s are similar to 501s in shape but have a zip closure rather than a button-up one. 550s are tapered, 517s are boot-cut, and 515s are meant to flatter the butt. In addition to style differences, the price varies for each style, so don’t be surprised when you find original 501s for $100+ and a later style like 517s for something around the $10 range. True 501s will also feature a pinky-nail-sized red tab on the back pocket. It should read, “LEVI’S.” Don’t worry, though, if you find a pair that reads, “Levi’s” instead of “LEVI’S.” In the ‘50s, the American heritage brand went lowercase.