This is a rare 1997 Shonen Knife concert t-shirt. It is a men's Large, but, in my opinion this is more of an XL. The width is 20" and the length from neck to base is 23".  The is some faint bleach stain on the front that removed a very slight amount of colour, but it's not so noticeable to me when I look at it. However, you can be the judge by looking at the pictures.