SIZE UP: If you hesitate between two sizes, we recommend choosing a larger size than your usual size. TRUE PERFORMANCE WEAR: Where style meets functionality in our SPORT collection. ULTRA-LIGHT & RECYCLED: Made from recycled polyester stretch jersey with Ultra-Dry moisture-wicking technology. SLIM FIT: Slim fit featuring an all-over tennis racket-inspired print and Novak Djokovic logo below the neck on back.