What could be better than contemplating the beach action from a comfortable hammock strung under a pair of shady palms? Nothing, except perhaps looking at it from behind a a pair of the Costa Del Mar Hammock Polarized Sunglasses with 580G glass lenses. Thanks to the glare-reducing polarization, light-filtering advanced 580 technology, and crystal-clear glass, you wonAAAAAAAAt miss a thing; nobody can miss you, either, when you sport these stylish oversized sunglasses. Product FeaturesFrame: nylonHinge: Lens: Interchangeable Lens: noPolarized: yesFace Size: medium, largeFrame Measurements: [lens length 2.3 in]; [nose bridge 0.6 in]; [temple piece 4.7 in]Case Type: hardNose Pads: yesTemple Pads: yesRecommended Use: casualManufacturer Warranty: lifetime