- 16-layer (both sides) anti-reflective multi-coating
- Wide-angle lens compatible ultra thin frame
- Chemically enhanced optical glass is 4x stronger
High Density Sharp Cut UV Glass Chemically Enhanced Optical Glass is 4x Stronger 16-layer (both sides) Anti-Reflective Multi-Coating Water & Oil Repellent, Scratch & Stain Resistant Wide-Angle Lens Compatible Ultra Thin Frame Glass Mounted with High Pressure Press Technology