Sleek and round, the Oakley Spindrift (OO9474) is made of lightweight O-Matter™ which makes it comfortable. It has been built specifically to be worn all day. Attached Unobtainium® no-slip nosepads help avoid hair tugging while keeping the eyeglasses in place. Polarized lenses are belonging to Prizm™ series brightening contrast and clarity in specific ambient light conditions leading better visual difference detail.