Vuarnet VL1107 Sunglasses plastic frame anti-reflective lens polarized Lens width: 3 Calibre 56/Pont 14/Branche 135 Yellow/green-based, category-4 mineral lenses with anti-glare and silver bi-shaded coatings. Grey-based, category-3 mineral lenses with anti-glare coating. Brown-based, category-3 mineral lenses with anti-glare coating. The brown base improves contrasts. It makes colors warmer.