Nike Free was an idea that had permeated the Nike HQ halls for decades, but it wasn’t until 2004 that the technology was perfected and finally unveiled. Since then, the Free sole has been one of the most popular footwear options of the last ten years, and its proven to be universally accepted by almost every sport in the world. We’ve seen Free in basketball, football, and even golf. As Nike enters the second decade of Free-dom, a new line of running models are unveiled – the Free 3.0 Flyknit, Free 4.0 Flyknit, and Free 5.0. Each pair focuses on naturally flexing soles, sock-like uppers, featherweight design, form-fitting heel supper, and minimal waste, which exemplifies the Free mantra in the best way possible. All three models are available right now on Nike.com and will hit retail on April 2nd, so get an official look below.