Nike's continued materials experimentation has yielded Flyknit, their proprietary blend of "yarns and fabric variations [that] are precisely engineered only where they are needed for a featherweight, formfitting and virtually seamless upper." The benefits of employing materials in this way are 1) a lighter weight product, and 2) less waste, as the Flyknit materials comprise the bulk of the upper, and 3) combining the comfort of a sock with the structure and support of a traditional hard-material sneaker.
As the company explains:
NIKE embarked on a four-year mission of micro-engineering static properties into pliable materials. It required teams of programmers, engineers and designers to create the proprietary technology needed to create the knit upper. The next steps were to map out where the specific yarn and knit structures were needed. Applying 40 years of knowledge from working with runners, NIKE refined the precise placement of support, flexibility and breathability - all in one layer. The result is precision engineering in its purest form, performance on display. Every element has a purpose: resulting in one of the lightest, best fitting running shoes NIKE has ever made.
The second video doesn't pretend to be informative, but instead uses sexy CG to show off the shoe:
The first Flyknit kicks will hit store shelves this July.