Men's Short Sleeve Activewear Tee Shirt in 90% Polyester 10% Spandex, Self fabric Contrast Panels At Shoulders, Fabric with Extra Elasticity for Workout and Running, Contrast Upper Body Panel with Sublimation/Printing, This Fabric Supports Body's Natural Cooling System by Wicking Away Sweat and Dispersing it Across the Fabric's Surface to Evaporate Faster.