Abstract: A midsole for footwear comprising a midsole element, which comprises a top plate, a bottom plate, and a plurality of strut members disposed between the top and bottom plates for supporting the top plate a distance away from the bottom plate. Adjacent strut members have a C shaped cross-section facing in the same direction. The midsole element may further comprise a heel cleft to increase the flexibility of the sole. In a preferred embodiment, the strut members on the medial side are arranged at an angle to the strut members on the lateral side of the sole. The directional design provides flexibility and stiffness anisotropically to the sole in the longitudinal and lateral directions of the sole respectively.

Abstract: An insert for footwear which has improved durability and pliability and satisfies a thumb test of pliability when exposed along the sides of the footwear. The insert comprises a compressible core at least partially surrounded by a flexible casing. The flexible casing has an open window of a size which is sufficient for insertion of the compressible core into the flexible casing but leaving sufficient material to hold the compressible core. The peripheral portion of the flexible casing is spaced from at least a portion of the peripheral surface of the compressible core, while not interfering with the foot applying pressure to the compressible core. A method for making the insert is also provided.

Abstract: An object of footwear for children which allows adults to visually determine whether the shoe proper fits the child and can be adjusted in its effective size when it is determined that the shoe has become too small. The article of footwear comprises a fitting system comprising: (1) a substantially transparent window disposed in a predetermined location in the vamp so that when a wearer who has a foot that properly fits in the article of footwear puts on the article of footwear, a portion of a toe of the wearer can be seen through the window, and (2) a sizing member attached to the upper, the sizing member being placed within the opening against the heel portion to create a first effective size of the article of footwear, the sizing member being removable to create a second effective size of the article of footwear. The present invention also provides a method of determining when to adjust the effective size of an article of footwear and adjusting the effective size of the article of footwear.