MUSCLE-UP. You'll look forward to the gym with a shirt that can take you to the weight room and beyond in comfort and style. The men's muscle tee is crafted from a lightweight blend with a hint of spandex. Moisture-wicking technology helps to keep you cool and comfortable even during your most rigorous workouts. Champion advanced odor protection eliminates unwanted odor for a clean feel. Classic script spans the chest while the Iconic C patch hits at the back neck for some true brand pride.