The 1978 501 jean marked a transition in production techniques and details for Levi's. Due to a short supply of indigo, sulfur was added to the dye to extend its life. This resulted in a brighter blue finish that faded more quickly. In addition to a lower rise and slimmer, more tapered fit, they also became the first jean to switch from the big tab of the 1960s to the small that is standard today.
â¢ button fly â¢ cone mills 12oz red selvage denim (14oz after wash) â¢ two-back pockets with bar tacks â¢ twin needle Arcuate â¢ double sided small Red Tab â¢ 100% cotton â¢ imported