Bollé Nerox Key Sunglasses combine a mid-size rectangular frame with polarized lenses to reduce glare and improve visual comfort outdoors. Key attributes: Black | Acetate | Polarized lenses | Category 3 sun protection | Anti-scratch coating | Anti-reflective coating | Hydrophobic coating | Signature flex hinge | Quick-release assembly screws | Rectangular full-rim frame | Mid-size profile | Dimensions & fit: Lens width 52 mm | Bridge 20 mm | Temple 140 mm | Small/medium fit | Composition & care: 54% acetate | 39% nylon