MLB Miami Marlins Cool Base Batting Practice Jersey, Black/Fire Red, Youth Authentic Batting Practice Jersey as worn on-field by your favorite Miami Marlins player before each game. Button front jersey Team specific color blocking Woven, Miami Marlins MLB Authentic Collection locker tag with washable security hologram for guaranteed authenticity Cool Base technology provides moisture management and temperature control, keeping you; cool, dry, and comfortable all day long ,Cool Base side seam label ,100% lightweight, moisture-wicking, stretch, micro pique body fabric with brushed back ,92/8 polyester/spandex stretch mesh sleeve and side panels ,Officially licensed by MLB