SPY Discord Mat Black/Gray Green SunglassesSPY+s revolutionary therapeutic Happy lens tech is scientifically tuned to boost mood and alertness while enhancing color and contrast, providing a truly life changing visual experience ARC (Accurate Radius Curvature) polycarbonate lenses are tapered to follow the natural curvature of the eye, providing crystal clear distortion free vision while reducing eyestrain Available with polarization, which blocks over 99% of surface glare and is layered and