The Flat Head FN 3XXX jeans are a 14.5oz denim woven on old shuttle looms. This denim is full of character and famous for its fast, high contrast, vertical fading. Even the pockets are designed to age uniquely, as they are specially double stitched - first with a poly-cotton thread for strength, then with a cotton thread that will shrink, leading to puckering that helps with the fading. This denim now come one-washed to take out most of the initial shrinking.
The 3002 denim is a slim taper fit, with a medium rise and a taper below the knee. This is a popular fit with a clean slim profile and a smaller leg opening.