<P> Nike Flywire is a thread, composed of Vectran or nylon, and developed by Nike, used in the upper of a shoe . The goal of Flywire is to minimize weight and maximize support . Shoes containing Flywire became available for consumer purchase in 2008 . </P> <P> Flywire was created by Jay Meschter, Director of Innovation at Nike . He began by taking a last (an object shaped like a foot used to design shoes) and marking the key points of where a shoe needs to support the foot . When Meschter saw an embroidery machine, he determined the machine could be used to make long stitches . Long stitches allow lightweight fibers to support the foot in key points, instead of using layers of material that support the whole foot . This idea was pioneered by Adolph Dassler in 1949, when he added 3 reinforcing stripes to his canvas Adidas running shoe . </P>

More recent versions of flywire are made of a thread comprised of what material