A long-sleeve button-down shirt in a medium teal blue with a tonal diamond-check optical pattern woven into the fabric. The repeating geometric motif creates a three-dimensional effect that shifts with movement. Dark buttons and a pointed collar frame the look, and a contrast inner collar trim adds a hidden accent.

Cut from Italian stretch fabric, this shirt delivers four-way flexibility and a wrinkle-resistant finish. Twenty-six individual pieces are joined with German stitching for enduring construction.

Conceived in Paris and built around an MIT-engineered fit algorithm developed from 30 million body scans, this Eins shirt enhances posture and creates a V-shape silhouette. It is a sophisticated texture piece for the man who values subtlety and West Coast refinement.

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