Levis imprints a number on the back of its button. The corresponding number can also be found on the care tag (if present) and is a good way to double check if the imprinted number had begun to fade. Here is a relatively complete source on what the button number means, and where the jeans were made.

How do you read Levis style number?

The Product Code can be found in two places. You can see it on the small, white wash & care labels sewn into each of our products. This version of the code should start with PC9, followed by 5 numbers, a dash, then 4 more numbers.

What is the difference between Levi 505 and 511?

What is the difference between the Levis 505 vs 511? The difference between the Levis 505 and 511 is the 505 jeans have a straight cut with a 16″ leg opening and the 511 jeans have a slim cut with a 14.5″ leg opening. And likewise, if you prefer a tighter fit, you will want to go with the 511 jeans.