This is truly a one of a kind, Sid Wilson Iowa era mask. It was worn once by me. It is is excellent condition.Latex is still nice and pliable. Would make a great Haloween mask or an awesome display piece. If you plan to wear it, I can try to get some dimensions but I would imagine it'd fit just about anyone just fine.
Please let me know if you have any questions or would like to see anymore pictures. I do not remember who made this mask but I know it has a makers' mark stamped on the back if you'd like to try and look it up. Please reach out if you have any additional questions or concerns.