For years I have reading glasses and am constantly busy trying to get the stains and booze from the glasses. Thanks to the ALCLEAR lens cloth this is not a big problem. In February it was time and my first bifocals was needed, it was an abomination, because I had all hands full already with the reading glasses. Long story short sense, without my ALCLEAR lens cloth would be the constant wearing of glasses for me unbearable. A small cloth with great effect for clear Duch Durchblicker ... a must !!!