NEW with tags. The flaw looks like some dark thread mixed in on some white area as seen in the pictures. Read the measurements in the item description. Material: Polyester Comes from a smoke and pet-free environment. Size: XL Measurements are taken laying flat and relaxed: Armpit to armpit is 26"(52" Chest), Shoulder width 22" Bottom of the back collar to the bottom of the shirt is 32", Sleeve length 24" Please ask questions. I hand pick and grade all my items. I do not mess around with questionable items. My feedback supports this. If there are obvious defects, pictures of it will be shown or mentioned in the description.