Although going by the name of Waist Overall at the time, this silhouette, a reproduction, represents the first-ever 501 jean by Levi’s. The year of 1873 marked the invention of the blue jean by Levi Strauss and Jacob Davis, as the bottoms originally had a cinch at the back and buttons along the waist that allowed you to attach suspenders. You’ll also notice there was only one pocket on the back, as the addition of a second pocket didn’t come until the 1901 version of the 501 arrived years later.