Gunnar Optiks Computer Eyewear - Halogen Onyx Frame Reduces Glare- Reduces glare and improves visual focus Sharpens Detail- Enhances detail for sharper, clearer vision Minimizes Eye Fatigue- Reduces visual stress and dry eyes Improves Focus- Helps your eyes focus more naturally protecting against fatigue Amber Tint- Specially formulated yellow tint conditions and shifts the color spectrum to provide superior contrast, detail and resolution. Ergonomic Fit- Lightweight frame and adjustable nose pads for comfort and style 20/20 Ready- Ready-to-wear for users with 20/20 or 20/20 corrected vision RX Compatible- Custom Prescription available through GUNNAR's prescription program with Carl Zeiss Vision www.gunnars.com/rx