Product: Calvin Klein Men's Cotton Combo Set Shirts

Quantity: Four shirts are included in the set.

Colors: The shirts are in a stack, from top to bottom, in the following colors:

 * Pink

 * Light grey/beige

 * Navy blue/black

 * Light blue

Design:

 * Fabric: The shirts appear to be made of a solid, plain cotton fabric, which looks soft and breathable.

 * Fit: Based on the fold and style, they appear to be a casual fit.

 * Collar: Each shirt has a standard, pointed collar.

 * Pockets: A single patch pocket is located on the left chest of each shirt.

 * Logo: The "ck" logo is embroidered on the outside of the pocket on each shirt. The logo is stitched in a contrasting, yet subtle, color that stands out against the fabric (e.g., black on the pink, light grey on the navy blue).

 * Sleeves: The shirts are folded to show they are long-sleeved.

 * Buttons: The shirts feature button-down closures with buttons that appear to match the color of the fabric.

Brand:

 * The brand is Calvin Klein, as indicated by the prominent "ck" logo on the shirts and the visible "Calvin Klein Jeans" tag on the top shirt.