Costa Del Mar Paunch 580G Glass Polarized Sunglasses are inspired by the white sands, clear waters, and legendary surfing of Bocas Del Toro in Panama. These Costa Paunch sunglasses boast 580G LightWAVE glass lensesthe clearest in the industry. All Costa sunglasses feature polarized lenses to control glare; select styles also feature a mirror coating. Costa's glass lenses are also scratch-resistant and thinner and lighter than average polarized glass. 580 technology filters out harsh yellow and harmful blue light, making colors brighter and objects appear more defined. These feature durable co-injected nylon frames made using an eco-friendly bio-resin process (using castor oil instead of petroleum) to reduce emissions and overall carbon footprint. Costa polarized sunglasses sport Hydrolite nose pads for a secure, comfortable fit. They also include a case, a cleaning cloth, and a mfrs. limited 2-year warranty.Manufacturer style #: 6S9049. Scratch- and impact-resistant 580G LightWAVE glass lenses Polarized lenses control glare Mirror coating (on select styles) for more glare protection 100% UVA, B, and C protection Tough, durable co-injected nylon frames made through an eco-friendly bio-resin process Hydrolite nose pads for a secure, comfortable fit Includes case, cleaning cloth, and mfrs. limited 2-year warranty