Nike has unveiled its next generation Air Max running styles, including the first ever Flyknit Air Max as well as a lighter, more flexible Air Max 2014. Both new styles offer runners a lighter, more flexible and ultra-cushioned ride and are highlighted by a two-color faded airbag. The design increases flexibility and decreases weight in the outsole. To further improve the design, the team incorporated unique flex grooves that encourage a smoother transition. Shaving even more weight, the designers took a cue from Nike’s heritage by using a redesigned Waffle outsole for better traction. The runners will be available from Nike stores and nike.com from December 5.