The Nike Air Tech Challenge 2 ‘Stone Blue’, better known by fans as the iconic ‘Tart’, returns in 2025 with all the retro energy that made it a standout in the golden era of tennis and sneaker culture. Originally released in the early ’90s and made famous by tennis legend Andre Agassi, this colorway helped redefine performance footwear with rebellious style and vibrant design.

This modern reissue stays true to the original with a crisp white leather upper, Stone Blue suede overlays, and the signature crimson “Tart” splash graphics on the heel and midsole. Perforations on the toe box and side panels ensure breathability, while Air cushioning in the midsole delivers comfort and bounce whether you're on the court or the street.

With its bold color blocking, performance roots, and cultural relevance, the Air Tech Challenge 2 ‘Tart’ / ‘Stone Blue’ is a must-have for fans of retro Nike history, tennis heritage, and timeless style.