Visionflex glasses

I want to warn everyone not to purchase the visionflex glasses. The quality is very poor and it's plastic frame. There policy states full 30 days refund if you not satisfied. I sent them email to ask for my refund within the same day of delivery as I was not happy with product. They emailed me that they can only give me 50% of my purchase price. They are misleading people so I advise to stay away from VISION FLEX GLASSES