I have owned my Jigsaw Sunglasses for about 2 years now and although they look quite delicate they have been dropped numerous times and have never got damaged.
They are a pale blue metal frame and lense, which you would think would be of no use on a really sunny day, but they still work great.
I really like these sunglasses and on an overcast day I actually find that they make everything appear a little lighter making driving much easier.
Great sunglasses, recommended.