The Nike Air Tech Challenge 2 is a men's athletic sneaker with a white leather upper, blue accents, and orange burst and hot lava detailing. This OG version was released in 2008 and features the style code 318408-141. The shoe is part of the Nike Air Tech product line and has a model name of Nike Air Tech Challenge. It is a size 8 and is perfect for collectors or fans of retro sneakers.