HAPPY LENSE: SPY+’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 POLARIZE: Available with polarization, which blocks over 99% of surface glare and is layered and sealed within the lenses to prevent scratching, delaminating, and hazing of your polarized filter CONSTRUCTION: Constructed from Grilamid, a lightweight frame material ideal for everyday wear due to its strength and flexibility UV PROTECTION: 100% UV protection reduces eye fatigue and long-term sun damage / DURABILITY: Robust 5-barrel hinges for added durability / MEASUREMENTS: Frame measures 58-17-145