One piece footwear

A method of manufacturing an article of footwear upper which comprises:

• obtaining a pattern of flexible sheet material for forming an article of footwear upper, said pattern comprising:
• a main bottom portion having a front toe area, a rear heel area and opposed sides, said main bottom portion being in the general shape of a foot sole;
• and
• and a single pair of heel-strap flaps extending outward from opposite sides of the main bottom portion near the rear heel area both members of the single pair of heel-strap flaps comprise rear portions that extend beyond the rear heel area of the main bottom portion and that are substantially parallel to one another and to a centerline of the main body portion and have free rear ends and rear inner edges between ends of the heel-strap flaps and an end of the main bottom portion, both members of the single pair of heel-strap flaps further having outward curving forward portions having free front ends,
• joining the free rear ends of the single pair heel-strap flaps directly to one another and joining the rear inner edges of the single pair of heel-strap flaps to the main bottom portion produces an enclosed, imperforated heel portion and joining the free front ends of the single pair of heel-strap flaps together produces an ankle strap having a central axis that extends outwardly from a bottom center of the enclosed heel portion, and
• attaching a front strap across the front toe area to from a toe strap.