This is a combo set of four Allen solly full-sleeved, pure cotton shirts. Each shirt features a solid color and a deer head logo embroidered on the chest pocket. 

Colors in the set:

 * White (top shirt)

 * Maroon/Burgundy (second from top)

 * Yellow/Lemon (third from top)

 * Light Blue (bottom shirt)

Key features:

 * Fabric: Pure cotton, as suggested by the user's query and the typical feel of such shirts.

 * Sleeves: Full-length.

 * Pattern: Plain/Solid.

 * Design detail: A small, embroidered deer head logo on the left chest pocket.

 * Collar: Button-down collar on the white shirt.

 * Fit: Appears to be a regular or slim fit, based on the smooth stack.

While the user's query mentions "Allen Solly," the prominent deer logo on the shirts is not the official Allen Solly brand logo, which is typically a stylized stag. It's likely that these shirts are either from a different brand that uses a similar name or a counterfeit product.