I ordered these after a friend who is a pilot loaned me his.  I wanted glasses that had a military aviator look without the price tag of the fancy designer brands.  I couldn't be more pleased.  The temples flex but are a snug fit, the black frames look great with the gray lens, and the optical quality is excellent both outdoors in direct sunlight and in the car driving.  I have owned everything from Ray Bans to Prada, and of all the sunglasses I have had, these are the best.  Cannot beat the price, and the look.  A definite winner!