This is a cute, vintage plaid shirt. The tags have been cut out. I have it displayed on a medium mannequin in the pics and it fits fine but there's a little extra room, so I'm thinking this is probably more of a size large. The fabric feels like a cotton or cotton blend. It's very light weight and thin. There's a cute asymmetric pocket flap on the front (there is not actually a pocket). I measure the chest as approximately 42". Length from back of neck to bottom 25". The fabric is NOT stretchy. Thanks for looking!