A4 Boy's Short Sleeve Full Button Baseball Jersey 90% Polyester / 10% Spandex, Stretch Mesh, 5.9 ounces per square yard ATHLETIC FIT - This jersey is composed of 90% polyester and 10% spandex for extra breathability and mobility. HIGH CONTRAST - These jerseys are designed to provide a standout white taping on the neck with classic buttons hems. MOISTURE WICKING - Innovatively designed to bring the moisture from your body to the exterior for evaporation, allowing you to stay cool and dry. ODOR RESISTANT - No one wants to bring the smell of the game back home. The jersey has odor resistant fabric that fights bad odors and keeps you smelling fresh. STAIN RELEASE MATERIAL - Stains are no issue with this jersey . Just one wash will lift deep stains, dirt and sweat and blood from the fabric of the jersey.