A used 501 66single model. This is an 66single model, as the stitching on the back pocket is single stitched, and the color is still there after 60-70%, but it is a denim with a strong vertical drop. The one shown here is customized to a zip fly and also has a hemmed up length, so I was able to get it for a cheap price for its condition.
top button (back)
||seat||front rise||back rise||thigh||inseam||opening||total length|