An article of footwear includes an upper that is at least partially formed from a base layer and thread sections that lie adjacent a surface of the base layer. The thread sections are positioned to provide structural elements that, for example, restrain stretch in directions corresponding with longitudinal...http://www.google.es/patents/US7870682?utm_source=gb-gplus-sharePatente US7870682 - Article of footwear having an upper with thread structural elements
Article of footwear having an upper with thread structural elements