I picked this up while in Uganda 15 years ago. Never worn. There is a stain/mark by one of the front pockets, which was there when purchased. No attempts were made to remove it. 

I believe it is made of a heavier cotton or cotton-blend material. 

Dimensions are in the photos. I wear a 2XL (American). I put the shirt on to size it and it fit well.

Please see pictures and email with questions.