Costa Del Mar Blackfin - Gunstock / Silver Mirror Glass 580G - You might have gallons of brine in your face and 600 pounds on your hook, but these sunglasses still won't slip. The Hydrolite™ co-injected lining takes care of that, and the flexible frame means serious comfort. Blackfin pushes the edge in sunglass performance--so you can push it everywhere else.
- Durable co-injected nylon frame.
- Includes hard case.
- Stainless steel integral hinge.
- 100% polarization kills reflected glare and reduces eye strain.
- Glass lenses have the greatest clarity and are scratch resistant.
- 100% UV light blockage for max protection.
- Built by hand and backed for life. Every pair of Costas include a lifetime warranty.