The Griz Polarized Sunglasses from Native Eyewear are adventure-ready sunglasses for camping, hiking, fishing and other outdoor adventures. These sunglasses feature N3 lenses that cut down on glare, deliver crisp definition and contrast, and provide excellent visibility and UV protection. Frame material: Eco-friendly material. Lens material: N3 Polarized Polycarbonate. Silver reflex mirror lenses with 10% VLT are best suited for bright days.. Green reflex mirror lens with 12% VLT are best suited for moderate to bright sunlight.. Side venting system reduces fogging. Fits large to extra-large face sizes. Imported.