Patent ID: 8590179
Filing Date: 2013-11-26
Classification: A43B

Abstract:
1. An article of footwear that extends in a longitudinal direction between a heel region and a forefoot region of the footwear and in a transverse direction between a medial side and a lateral side of the footwear, the article of footwear comprising: (a) a first sole portion, said first sole portion including: (b) a second sole portion, said second sole portion including: wherein each hollow tread member includes an inner surface and an outer surface, the inner surface of each hollow tread member at least partially defining a hollow cavity within the article of footwear such that the plurality of hollow tread members at least partially define a corresponding plurality of separate hollow cavities, and the outer surface of each hollow tread member at least partially defining a ground contacting surface of the footwear, and wherein each hollow cavity of the plurality of hollow cavities extends between a first opening facing in a direction towards a medial side of the footwear and a second opening facing in a direction towards a lateral side of the footwear such that the ends of the hollow cavity are open to the outside of the article of footwear.