I would give this item ZERO stars if that were possible! Do NOT purchase this cheap nonadjustable piece of crap! The glasses have a harsh glare that does not go away, they would not focus, you can not clean the dust off the lens. Read all the negative reviews and please believe them. I sent the glasses back which cost me money, and did not get the value of the original shipping back either, what a ripoff! They are making their money off the shipping which you don't get back. RIP OFF! DO NOT Purchase!! Amazon should stop selling this product!