The major reason being they are the original makers of the jeans, which were invented back around the late 18th century. The popularity of Levi's jeans is mainly because of the quality they maintain. May it be the unique collection, color patterns, or the regular fit they provide, everything is top-notch.

What is so special about Levis?

"Levi's brand is iconic because it's trusted by consumers — trusted for innovation, quality, performance, durability, style, fit and more. Levi's listens to its shoppers and empowers them to help guide the company.

Is Levi's good quality?

So let's be clear; jeans from the mainline Levi's brand are made in third world countries and just should not be considered any higher quality than any other jeans in this range, from Banana Republic, GAP, H&M, Zara, etc. ... So what they lose in quality is made up for with a massive selection.