Stylish and durable, the Costa Del Mar(R) Men's Ballast 580P Polarized Sunglasses are the ideal shades for any outdoor enthusiast. Frame-less and tipping the scales at an ultra lightweight of 16 grams, you won't even know you're wearing these Costa sunglasses. TR90 nylon ballast material maximizes durability and an 8 Base Curve adds protection in an eye-catching Costa eyewear style. Get superior UV eywear protection and reduce sun glare when you wear the Ballast Polarized Sunglasses. FEATURES: 100% UV light blockage for maximum protection 100% polarization eliminates glare and reduces eye strain Ultra-light, frame-less TR90 nylon Ballast for maximum durability Premium lenses for protection and style Integral hinge 8 Base Curve Lens Size: 60mm/37mm Temple Length: 130mm Bridge/DBL: 16mm/15mm Made of nylon frame material Weight: 16 grams California Proposition 65