What a super groovy vintage shirt from the 60's or 70's! This is the real thing, not a reproduction. No size tag but measures 19.5 inches from armpit to armpit and is 29.5 inches long from shoulder to hem. It appears to be about a size Medium, but please check your measurements to make sure it will work for you. It's in excellent shape and will make a fine addition to your groovy closet. The material is very thin and breezy so I've included a pic holding it up to light so you can see. It is NOT see-through, just thin. Check out the huge collar. So very cool.