Pleats on the front, it has some use, they expand a little here and there when i sit, or squat or when buttoning the jacket, it gives,some extra flex on the jacket, and due to those rectangular stiching they retract in neatly, but to me i just like it as it looks like shark's gill, but it makes the pockets to be pushed outward and with lowset pocket, the outside of their flaps are brushing against my sleeve and maybe will trigger early fades.