This is an amazing vintage disco shirt from JC Penny's Inn Shop.

Made of poly, it's in a pattern of blues and reds that features medieval characters.

The shirt has a huge '70s collar, big barrel cuffs, a '70s slim fit, and a square tail. 

This beautiful shirt is in absolutely MINT condition.   It is guaranteed to be authentic and absolutely perfect. 

  Marked L. 

I have measured the shirt and: 

 The sleeve length is 35/36 inches from mid-collar to the end of the cuff. 

Across the back, laid flat, the shirt measures 23 inches armpit to armpit and 30 inches from the collar seam to the bottom of the back tail.

Please compare my measurements with a shirt that fits you well to ensure the size is right for you.