The Nike Air Tech Challenge II “Hot Lava” Returns in 2014. One of the most recognizable colorways in the Nike Air Tech Challenge II series is coming back after a 5 year retro hiatus. The Nike Air Tech Challenge II “Hot Lava” last released in 2008 and slowly became one of the more sought after colorways in the agassi series. For those looking for a pair, might as well wait to cop the retro next year. Let us know if you’ll be picking these up.