Article of footwear with thermoformed siped sole structure

A sole structure for an article of footwear, the sole structure comprising:

• a thermoplastic base layer that defines an inner surface operative to be secured to a portion of an upper, wherein the base layer defines a concave recess for receiving a portion of the upper, the inner surface including a central region operative to be secured to a ground facing surface of the upper, and opposing sidewalls operative to be secured to opposite medial and lateral sidewalls of the upper;
• a thermoplastic outer layer integrally formed with the base layer, the outer layer comprising:
• a plurality of protuberances, each protuberance having an outer face that defines a portion of an outer sole surface;
• a plurality of splayed sipes extending across a portion of the sole structure, each splayed sipe extending between at least two adjacent protuberances;
• and
• wherein each sipe of the plurality of splayed sipes has a splay attributable to a deformation of the base layer
• wherein the plurality of splayed sipes comprises a first plurality of splayed sipes and a second plurality of splayed sipes;
• and
• wherein each of the first plurality of splayed sipes intersects each of the second plurality of splayed sipes;
• wherein at least one of the first plurality of splayed sipes has a terminus at the base layer of a first of the opposing sidewalls and extends longitudinally from a heel region of the sole structure to a forefoot region of the sole structure;
• and
• wherein at least one of the plurality of splayed sipes has a terminus at the base layer of a second of the opposing sidewalls and extends longitudinally from the heel region to the forefoot region.