Abstract: A longitudinally expandable shoe includes a heel assembly which may be joined to a sole assembly; the heel and sole assemblies have sets of flexible platelike portions, respectively, which interleave with one another. Joining means fasten the heel and sole assemblies at a selectable spacing to one another, and height adjustable arch support means are joined with one end thereof to one of the heel and sole assemblies for supporting the foot of a wearer. An upper has front and rear portions attached to the sole and heel assemblies, respectively, and elastic joining means are provided for joining the upper front and rear portions.