The Oakley Flight Jacket Prizm are cycling glasses designed from an aerodynamic point of view and, thanks to its fantastic features, are the ultimate in cycling glasses. Where they had already taken an enormous step forward with the Jawbreaker with an enlarged visual field, Oakley has improved this once again with these Flight Jacket glasses. Because these cycling glasses have an 'open' top, an even larger visual field that has been ever created. This Flight Jacket also has better ventilation thanks to the special Advancer. This is a lever on the nosepiece that you can easily push forward or backwards, releasing new airflows for better cooling. This is very nice when you are climbing, for example. This gives you the advantages of real cycling glasses, but it's not so close to your face that there's sweat on the lens. Also included with these pair of glasses are 2 different lengths of earpieces so it will always fit on your head. In short, are you looking for glasses that are really great, because of their unique characteristics? Then this Oakley Flight jacket Prizm are the cycling glasses for you!