Absolute garbage
Do not purchase these as they will not continue to adhere to the glasses.  Seems like the double stick tape used does not have enough adhesion to the nose piece.  Used alcohol to remove oils and then attached nose guard.  Lasted a few days and began to fall off.  I have now replaced almost the entire purchase as of the end of July.  You be the judge but I cannot recommend these for the intended purpose or any other purpose.
Rating: 1 stars