In Europe during the cold war  a group of scientists developed a material for military use that fused surgical steel and titanium.  It was exceptionally light, durable, flexible and  hypoallergenic.  In 1980 they started using this material to make eyeglass frames.  The frames are handmade, but manufactured with outstanding precision.

They are entirely produced in Germany and Poland.  The end product is sophisticated, virtually indestructible, durable, and comfortable.