Originally Posted by JimNM
Those are "G" suits - they inflate by air pressure to keep the blood from pooling in the pilot's lower extremities under heavy g-force. Man, did you never watch TOPGUN?
I believe the box shapes are in fact cargo pockets - click on the link and scroll down to the bottom picture where the pilot an her RIO/NAV are posed together on the ladder, for a better look. You will also see seat belt fasteners sticking out from behind their calves...insert you own imagination here....
Of course they are G suits. I beleieve the blocks at the bottom are not cargo pockets but shin protectors. Man.