A solid black long-sleeve button-down with a sleek, smooth satin-like finish that catches the light with a subtle sheen. The clean, unadorned front lets the fabric quality speak for itself, while the spread collar holds a sharp line. The overall silhouette is slim and modern, built for occasions that call for understated authority.

Cut from Italian cotton with a sateen weave, this shirt delivers a refined lustre without the full shine of silk. The fabric resists wrinkling and sits smoothly against the body, maintaining its polished appearance from first button to last.

Assembled from 26 precision-cut pieces with German stitching, the Fibonacci JacqCuff uses an MIT-engineered fit algorithm calibrated on 30 million men. Paris-designed, it is the kind of black shirt that elevates a look simply by fitting better and feeling richer than anything else in the wardrobe.

Machine wash cold, hang to dry. Available in sizes S to 5XL.