The Nike Air Classic BW “Paris Saint Germain” builds on the original 1991 Air Max BW (“Big Window”) design with a neutral grey base, then adds PSG’s club colours through red, blue and black hits on the mudguard, Swoosh, tongue and lining. The upper mixes breathable mesh with smooth and perforated leather overlays, keeping the familiar BW paneling and low‑cut silhouette, while PSG‑inspired detailing and limited distribution make this pair especially sought after by collectors. Underfoot, the shoe retains the classic polyurethane midsole with its enlarged visible Air unit in the heel and a rubber outsole for everyday traction, delivering the same retro running feel that helped make the BW a cult favourite in Europe.