A pneumatic inflation device disposed within the sole of a shoe and
comprising a pump which is entirely within the sole, a pump actuator which
is entirely within the sole when not in use, and an inflatable bladder
which is entirely within the sole and is operatively connected to the
pump. Such a device can include a mechanism to lock the pump actuator
within the sole such that the mechanism's cap is flush with the outer wall
of the sole and finger-operable to allow the shoe-wearer to easily operate
the inflation device.
