Patent ID: 7900379

Claim:
An article of footwear comprising: an upper that defines an interior void having a lower surface and a pair of side surfaces extending upward from the lower surface; a sole structure secured to the upper, the sole structure being positioned below the void, and the sole structure defining a ground-engaging surface of the footwear; an insert having an upper surface for supporting a foot, an opposite lower surface, and a pair of side surfaces, the insert being positionable within the void such that the lower surface of the insert contacts the lower surface of the void defined by the upper and the side surfaces of the insert contact the side surfaces of the void, the insert being removably positioned within the void and vertically above the sole structure to which the upper is secured; and a securing system that includes a protrusion and an indentation with corresponding shapes, at least one of the side surfaces of the void defining the protrusion, and at least one of the side surfaces of the insert defining the indentation, the protrusion being located to receive the indentation when the insert is positioned within the void and the lower surface of the insert contacts the lower surface of the void, and wherein the sole structure is secured to the upper independently of the securing system.