A4 Boy's All Porthole Practice Jersey 100% Polyester Mesh, 5.3 ounces per square yard 100% POLYESTER - This jersey is made out of 100% polyester. Made for athletes, to create a warm and breathable jersey that does not limit mobility. 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. DOUBLE LAYER COWL - Sewn with a double layer cowl pattern to provide maximum durability for your toughest activities. MOISTURE WICKING - Innovatively designed to bring the moisture from your body to the exterior for evaporation, allowing you to stay cool and dry. 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.