The 18oz vintage denim is woven in the famed Shinya Mills in Japan, one that specializes in vintage style fabric. This denim is a loose weave woven slowly with low tension on old shuttle looms. It starts off a bit crunchier and hairier than other Iron Heart denim, but will fade fast as it opens up. As the name suggests, these 18oz denim will fade to a vintage appeal. The Iron Heart IH-555 jean is the answer for all those guys looking for a slim silhouette. They call it a Super Slim, but it's really just Iron Heart's take on a modern slim jean. The medium rise provides plenty of coverage up top, and the slim thigh and leg profile keep the jeans looking very clean throughout.