To provide the best possible experience, we brought to you these unique sustainable frames together with the New Generation of Polaroid lenses with 9 layers of protection (2 layers scratch-resistant, 2 layers shock-resistant, 4 layers of UV400 protection (maximum UV protection) and 1 main layer of polarization). They offer guaranteed maximum UV rays protection and are free of glare. PLUS, all of our lenses have a lifetime guarantee against breaking it.