Named for small islets made of crushed coral sand, Costa Del Mar Motu 580G Glass Polarized Sunglasses help you get the most out of your days on the water. These Costa boating and fishing sunglasses are polarized and outfitted with mirror coatings to block reflected glare, especially on the water. LightWAVE glass lenses provide 100% UV protection plus unmatched clarity, contrast, and definition. Costa 580 technology takes lens performance to new heights by eliminating glare from yellow light and boosting red, blue, and greenresulting in deeper colors and sharper contrast. The 580 lenses also feature both a water-repellent coating and an anti-reflective coating. These Costa Del Mar men's sunglasses boast lightweight frames made from tough, durable, co-injected nylon using an eco-friendly bio-resin process (using castor oil instead of petroleum) to reduce emissions and Costa's overall carbon footprint. Optical spring hinges and rubberized inserts on the temple tips ensure a comfortable fit. These Costa Del Mar Motu sunglasses include a case, a cleaning cloth, and a mfrs. limited lifetime warranty.Manufacturer style #: MTU. Scratch- and impact-resistant 580G LightWAVE glass lenses - the clearest in the industry Polarized lenses with mirror coatings help control glare 100% UVA, B, and C protection Co-injected, eco-friendly nylon frames are tough and durable Hydrolite nose pads and temple tips for a nonslip fit Includes case, cleaning cloth, and mfrs. limited 2-year warranty