Vintage Metzler International Sport sunglasses, these are model 0153 085.
Made in the late '80s, never before worn
New Old Stock. Metzler is a German heritage brand with a long history.
These are an aviator shape, with a built in elastic strap to keep them around the neck during sports.
These come with sun lenses in solid brown.
Size is 62mm (Lens Width), 15mm (Distance Between Lenses) and 140mm (Arm Length).
I would say they're a Medium to Large Men's size.
Please note some small imperfections:. One of the lenses bows out from the frame just a tiny bit. Its not noticeable when wearing the glasses and is barely worth mentioning. The other issue is that the elastic strap is slightly twisted, and I'm not sure how to untwist it.