Gresso glasses are incredibly light and totally unbreakable. You shouldn't worry about durability anymore.
Lenses: Carl Zeiss
Weight: 18 g
I bought these as a Valentine's Gift for my husband. He loves the classic style with all the extra touches. The size was perfect. I was a bit worried as he has a very large head. The spring hinges eased any concern about the arms becoming weak because of the screws loosening or falling out. The adjustable nose pad don't leave any marks behind. The glasses are hip and stylish on him and I would buy another pair. They are durable, bendy, and never lose their shape. Excellent quality polarized sunglasses that provide UV protection and provide sharp clarity with a tint that isn't too dark that requires to remove them to read things. My husband is very picky about everything and he loves these.