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 sun-glass performance-so you can push it everywhere else. FEATURES Comfortable large fit.Integral hinge.Heavy-duty TR 90 nylon frame.Includes hard case.100% UV light blockage for max protection.100% polarization kills reflected glare and reduces eye strain. Black frames with gray glass polarized lenses.