Smith Optics Soundcheck polarized sunglasses. If you like the aviator shape of popular metal frames but are afraid of smashing them while on your extended global tour, fear no more. The Soundcheck is fast, loud and strong enough to endure life on the road. A timeless tear-dropped aviator lens shape is captured within the lightweight and road-ready frame. Grilamid TR90 frame. Polarized Carbonic TLT lenses. Hydrophilic megol nose pads. 6 Base lens curvature. Imported.