I have bought GKB Sundrive Sun glasses on last year. It has cost me 2500 INR which was very expensive comparing to others. It was not comfortable to use in sunny days. It cannot able to protect my eyes from annoying sun rays. I used to catch headache after using for 30 minutes. Even after using couple of months the glasses has got scratches. The colour of this sun glasses has been faded and the sticks of this sun glass has been loosen. I had bad experience with this sunglasses. So I recommend everyone to select other sun glass brand rather than this