100% Polyester - Lightweight. Main body fabric is tightly woven and has a dull shine in appearance. Big & Tall Men's PowerTrain Tech Performance Pieced T-Shirt with moisture-wicking Vapor technology. Sleeves and Sides have Contrasting Heather Gray color panels. Champion Vapor technology quickly evaporates moisture and dries faster Full Cut and Sized Properly for Big & Tall Men. New, first quality, Champion PowerTrain Tech performance crewneck T-Shirt. Sleeves and sides have contrasting heather gray color panels. Full cut and sized properly for Big and Tall Men. Moisture-wicking Vapor technology keeps you dry even during the most vigorous workout. Ribbed neckline with reinforced binding along inside back neck. 100% Polyester - Lightweight. Main body fabric is tightly woven and has a dull shine in appearance. Side and sleeve panels is a matted heather gray color. Champion logo printed on left chest area. Coverstitched seams. All retail tags attached. Enlarge photos for detail.