Breathable sole structure for footwear

摘要

The instant invention is a breathable sole structure for footwear. The footwear sole structure includes an insole (12), an outsole (14), and a functional membrane system (16). The insole has an area with a plurality of holes therethrough. The outsole has an area with a plurality of holes therethrough. The functional membrane system has a microporous hydrophilic membrane (36) and a microporous hydrophobic membrane (38). The insole and the outsole are bonded to each other, so that the functional membrane system is sandwiched therebetween; and furthermore, the functional membrane system is juxtaposed to said areas. <IMAGE>