Article of footwear with a stretchable upper and an articulated sole structure

An article of footwear comprising:

• an upper formed from at least one material layer that includes a plurality of linear incisions, the upper having lesser stretch in a first direction that corresponds with an orientation of the incisions, and the upper having greater stretch in a second direction that is orthogonal to the first direction, the at least one material layer including an exterior layer and an interior layer, the exterior layer including the incisions, the interior layer forming at least a portion of an interior surface of the upper throughout a longitudinal length of the footwear, and the, interior layer forming both the interior surface and an exterior surface of the upper in a heel region of the upper;
• and
• a sole structure at least partially formed from a polymer foam material, the sole structure including a plurality of sipes that extend into the polymer foam material and form flexion lines in the sole structure, the sipes defining a plurality of discrete sole elements that are separated by the sipes.

An article of footwear having an upper end a sole structure, the upper comprising:

• an exterior layer forming at least a portion of an exterior of the upper, the exterior layer including a plurality of incisions that extend through the exterior layer, the incisions being formed trough a laser-etching process;
• and
• an interior layer located adjacent at least a portion of an Inner surface of the exterior layer, the interior layer being unsecured to the exterior layer in areas that are proximal to the incisions, and the interior layer being exposed through at least a portion of the incisions, the interior layer forming at least a portion of an interior surface of the upper throughout a longitudinal length of the footwear, and the interior layer forming both the interior surface and an exterior surface of the upper in a heel region of the upper.