This is a men's Tommy Hilfiger pure cotton full-sleeved shirt. It's a classic and versatile piece, perfect for a smart-casual or a polished look.

Key Features:

 * Fabric: The shirt is made from pure cotton, which suggests it is soft, breathable, and comfortable for all-day wear. The fabric appears to have a smooth finish.

 * Color: The shirt is a deep, rich shade of green, often referred to as teal, forest green, or deep emerald.

 * Collar: It has a button-down collar, where the collar points are fastened to the shirt body with small buttons. This style gives the shirt a clean and neat appearance and is a hallmark of many casual and smart-casual shirts.

 * Sleeves: The shirt has full-length sleeves with buttoned cuffs. The cuffs are a standard, single-button style.

 * Pockets: There is a single patch pocket on the left chest.

 * Branding: The iconic Tommy Hilfiger flag logo is embroidered on the chest pocket, typically on the top corner. This subtle branding is a key detail for the shirt.

 * Fit: The fit appears to be a slim or regular fit, tailored to a modern silhouette without being overly tight.

 * Buttons: The buttons on the placket and cuffs are white, providing a nice contrast against the dark green fabric.