Polarized, injection-molded polycarbonate lenses reduce 99% of visible glare from water, snow, sand and pavement for increased visual acuity and decreased eye strain. Megol temple pads and nosepads are hydrophilic, so they absorb moisture and keep the frames securely in place. 8 base lens curvature (the higher the number the more curved the lens). Grilamid nylon frames are flexible and durable. Custom metal logo plaques.