Patent ID: 8333021

Claim:
An article of footwear, comprising: a sole; a collapsible upper, wherein the sole is attached to the collapsible upper, the collapsible upper including: a first portion; a second portion which is below the first portion and extends from the sole to the first portion; and a seam which is positioned above the sole and is not in contact with the sole and further joins substantially the entire perimeter of the first portion with substantially the perimeter of the second portion; wherein when the collapsible upper is in a collapsed state, the seam becomes the widest points of the article of footwear and defines the perimeter of the article of footwear, wherein the sole is surrounded by the second portion of the collapsible upper when the collapsible upper is in the collapsed state and when the collapsible upper is in an expanded state, and wherein when the collapsible upper is in the collapsed state, the first portion lies on the second portion so that substantially all of a bottom surface of the first portion is in contact with an upper surface of the second portion.