I am very much upset about this product . I used this product for not more than 2 month. I purchased this for about Rs. 700 from flip cart.
This VF is plastic coated and it was difficult to wear for longer period. We can wear in the most extreme case for more than 10 minutes and after that it is difficult to wear because u feel pain in your head and the quality of this product is not up to the mark.
So what I can suggest is investing in such product is no a good choice.
Have a nice day.