Shoe with adjustable upper

A shoe, comprising:

• a) a sole for supporting a bottom of a wearer's foot, the sole having opposite lateral sides spaced apart along a transverse direction;
• b) an adjustable upper secured to the sole and spanning over a top of the wearer's foot between the sides of the sole, the upper including a forward region and a rear region spaced apart along a longitudinal direction perpendicular to the transverse direction, and an intermediate region located between the forward and rear regions, the upper including a pair of outer and inner, flexible material, layers sealed together at contact zones and bounding a plurality of tubular passages;
• c) an inlet mounted on the intermediate region of the upper and being in fluid communication with the tubular passages for filling the tubular passages with a fluid, and a closure for closing the inlet to resist the escape of fluid from the tubular passages;
• and
• d) a forward one of the tubular passages at the forward region of the upper spanning over the top of the wearer's foot along the transverse direction between the sides of the sole, a rear one of the tubular passages at the rear region of the upper spanning over the top of the wearer's foot along the transverse direction between the sides of the sole, a side pair of the tubular passages at the sides of the sole extending along the longitudinal direction, and a group of radial tubular passages at the intermediate region of the upper spanning over the top of the wearer's foot from the inlet along radial directions to the forward and rear ones, and the side pair, of the tubular passages.