These are the sunglasses I think of when I think of the 80s. Classic black and white.
Measures 5-3/4" in length across the front, arms are 5-1/2" in length and in between the arms is 5" at the widest part and 2" at the end. Height is 2-1/2". Those arms are very tight and not loose at all.
One itsy bitsy chip in the white paint on top - please see photos.