The creators of the inaugural 990 were charged with crafting the ultimate running shoe. The MADE in USA 990v6 faithfully carries forward this original mission, incorporating a range of performance-driven enhancements. Its upper eliminates the traditional midfoot saddle, allowing pigskin and synthetic overlays to seamlessly span from heel to toe over the mesh base, resulting in a sleek, aerodynamic appearance. While this refined design represents one of the most significant transformations from one model generation to the next in the history of the 990 series, the most notable advancement lies within. The integration of FuelCell midsole cushioning ensures that the evolution of the 990 is not only visible but also palpable in every stride.