NWT Official MLB team colors and logos 3.MLB Authentic Collection Performance Apparel transfer locker tag 4.Cool Base™ technology provides moisture 5management and temperature control, keeping you cool, dry, and comfortable all day long 5.Cool Base™ side seam label 6.100% polyester moisture wicking performance mesh 7.88/12 nylon/spandex stretch mesh performance gussets under each arm 8.Officially licensed by MLB