The Nike Air Tech Challenge 2 Casual Shoes are imported.Ace your unapologetically bold look with a blast from the past in the Men's Nike Air Tech Challenge 2 Casual Shoes. These sneakers flipped the tennis sneaker game on its head when these bad boys hit the scene in the '90s with their brash and unconventional style favored by the biggest tennis star of the era and maintain head-turning appeal to this very day. This edition stays true to the OG's foundational elements like real and synthetic leather on the upper with a more aged aesthetic on the midsole that pays homage to the designs ability to withstand the test of time.