We redesigned the cage for people who might want to use a nettting. The forward curve of the main cage supports are for maximun prop clearance and strength. Our feet position is higher to prevent settling of blood in high G maneuvers and Hi G turns. This keeps you alert incase you are into that sort of stuff. It also keeps your feet inside the craft and full body protection. I have broken many PPG seats putting Gs on my back pack unit.