With a silhouette inspired by the popular Hijinx sunglasses, Oakley SI Turbine Sunglasses feature Prizm Polarized lenses that reduce light transmission and increase contrast, giving you superior visual acuity in bright light conditions. OakleyUs exclusive ultra-lightweight O Matter frames are enhanced by Unobtainium earsocks and nosepads that adapt to sweat and result in a secure fit, no matter what.