Black pocketed shirt with colored sleeves

Block background with a pocket on the left chest pocket and sleeves have colors of copper, silver, gray' black and blue. Feels like the dry fit shirts but there is no tag telling me what the fabric is made of. Armpit to armpit measures 21". Shirt has a good bit of stretch. Shoulder to hem measures 28 1/2 inches. In good condition, smoke free home. K