Good product awesome support My first glasses was stolen from package on transit send a picture to courier and gmg performance. Courier did not even bother to be interested but got answer from gmg and they sent new pair of glasses. (Answer from gmg took about 72h so do not panic if you are waiting mail from support) Btw these glasses are comfty and stylish

GMG performance glasses Not only for gaming but as someone with a very busy school schedule these glasses have quite literally saved me the headaches from looking at computer screens for prolonged hours of studying. I noticed the difference within 2 days of using them and don’t see myself taking in all that blue light with unprotected eyes anymore. My sleep quality went up after using them as well. Overall an amazing product that’s worth checking out if you find yourself in front of screens often.

Very good product I highly recommend I… Very good product I highly recommend I no longer have a single problem thank you GMC performance

Refund The glasses I received, I was not satisfied with them and decided to send them back and get my money back. It turned out that I had to do it at my own expense and send them to France to their warehouse. I have been waiting for the refund for 7 days and nothing, I wrote to them twice and no one responds very bad communication.

GMG Optimizer - A Student's Review I ordered a pair of GMG Optimizer - Mat back in November 2020 because I had headaches due to my online classes and I'm glad I did. Even if we're back in school, I still use them fairly regularly for late night study sessions and movie nights. I would appreciate if the glasses were a little larger but they still work very well and I've got compliments while wearing them.