Desctiption Nike - Air Tech Challenge Hybrid White (O43j2638) Combining various examples of all three generations of the Agassi-signature and heralded retro Nike tennis classic the Air Tech Challenge, Nike creates a hybrid version seen here. The predominantly white leather upper is contrasted by three colors–Volt green, neon pink splatter, and gradient green-to-blue–at the heel and through the forefoot, emanating a distinct vintage aesthetic. Shipping Weight: :0.59kg