These Dirty Dog sunglass frames are lightweight extremely flexible yet super strong with 100% memory allowing the frames to bounce back to their original shape. All Dirty Dog lenses are treated with two specially developed hard coatings to make the lenses extremely scratch resistant and prevent the deterioration of lens clarity. :: Men > Sunglasses. Stretch resistant and distortion free for maximum clarityMaximum hinge strength and ensures great comfort for the wearer100% UV protection with 4 UV filters for optimum sun blockageGrilamide TR90. a thermoplastic polyamide FrameBlock 100% of reflected horizontal glareEnhance the clarity of vision for safe and durable wearing in outdoor environmentsPolarised polyfilter and polycarbonate lenses Size: one size.