This is a men's short-sleeve shirt with a black and white leaf print, often referred to as a Cuban or Havana collar shirt.
This style is a popular choice for warm weather, casual outings, and beachwear. The specific design features a camp collar (a relaxed, open notch-style collar) and a button-up front. Search results suggest the shirt is made from various materials, including cotton, crepe, or polyester, all known for being lightweight and breathable.