Type: Men's long-sleeve casual or smart-casual shirt.

Brand: Tommy Hilfiger (indicated by the small embroidered flag logo on the pocket).

Color: A rich, solid shade of brown, which could be described as chocolate, coffee, or espresso brown.

Material: Pure cotton, as suggested in the user's request, providing a smooth and comfortable feel.

Fit: The shirt appears to be a slim-fit or tailored fit, contouring to the body without being too tight, giving it a modern and clean silhouette.

Design Features:

 * Solid Color: The shirt is a single, uniform color with no patterns.

 * Full Sleeves: It features long sleeves, suitable for various occasions and seasons.

 * Cuffs: The cuffs are fastened with buttons.

 * Button-down Front: A full button-down closure is visible down the center of the shirt.

 * Pocket: A single, classic chest pocket is located on the left side, featuring the iconic small Tommy Hilfiger flag logo embroidered at the top.