Costa Del Mar Blackfin 580P Polarized Sunglasses with polycarbonate lenses deliver the quality protection and crisp vision required to push the limits, regardless of conditions. The Blackfin's dual-color, heavy-duty, TR-90 nylon frames are durably crafted for hard-core outdoor enthusiasts and sport a Hydrolite co-injected lining to prevent slippage. These polarized sunglasses feature the clearest lenses on the planet. True Costa 580 Technology blocks yellow light, boosts red and green light, and increases polarizing efficiency. The C-Wall proprietary coating powerfully repels water, oil, dust, and scratches to keep up with your fast-paced lifestyle. Their incredible impact resistance has been rigorously proven with ANSI Z80.3 and ANSI Z87.1 high-impact/velocity testing. Featuring polycarbonate lenses that are lightweight and impact-resistant, these powerful sunglasses provide 100% polarization and UV protection. Costa Del Mar Blackfin Sunglasses include a manufacturer's lifetime limited warranty and a hard case with cleaning cloth.Manufacturer style #: 580P. Provides 100% polarization and UV protection, minimizing glare and visual fatigue Polycarbonate lenses are lightweight and impact-resistant Co-molded technology for maximum durability and comfort True 580 Technology blocks yellow and blue light while boosting red and green light TR-90 nylon frames Hydrolite provides comfort and grip at the temples