Nike Air Tech Challenge II Back to the US Open- The Nike Air Tech Challenge II Back to the US Open celebrates the legacy of Andre Agassi and the revolutionary impact his line had on tennis in the 90s. This special sneaker pays tribute to the atmosphere of the American Grand Slam, revisiting the iconic field silhouette with premium details and a color palette that recalls evening sessions at Flushing Meadows. High-quality leather upper coupled with perforated panels for maximum breathability, finished with the inevitable iconic side "splatter" pattern of the Challenge series. Foam midsole with Air unit visible in the heel to offer comfortable and responsive support in everyday use. Exclusive inserts and chromatic details dedicated to the US Open, with the Nike Challenge Court logo clearly visible to keep the vintage tennis aesthetic alive.