The boot's strap assembly and latch.
To don the boot, the astronaut would open the retaining
strap at the top of the boot's front, undo the two
snap fasteners to allow the upper part of the boot to be unfolded, insert
garment assembly boot (using the donning
strap, as required), gather the excess
material and close the snap fasteners, and then fasten the retaining
strap and adjust and latch the strap
is not visible in this photo, having extended around the boot's instep.