"Peak Velocity - Men's Jacquard Muscle Tee" is rated, size L. The muscle shirt is available in 5 colors - blue, grey, green, navy and black. It was delivered in black, which is more of a dark grey. The shirt is made of 100% polyester and is machine washable at 40°C. The shirt is sleeveless and extremely light, so you hardly notice it on the skin. and the shirt dries very quickly. The muscle shirt has a casual look and is true to size. The workmanship is good, all seams were sewn cleanly and neatly, everything was made accurately. 4 stars!