Costa Ocearch Slack Tide Polarized Sunglasses - When the tide goes slack, so does the fishing. In Costa’s athleisure OCEARCH Slack Tide sunglasses you can move on to another spot to chase a different adventure. This laidback west coast inspired frame is infused with functional elements - Hydrolite padding, pin hinge, ventilation and 580 Polarized lenses so you can see through multiple tide changes. Costa believes in products with a purpose, and is proud to help support OCEARCH in its mission to protect the sharks that keep the oceans' ecosystems balanced. The OCEARCH Collection helps fund research expeditions that generate critical data and put science on the side of sharks. Features Premium Polarized 580 Lenses: Filtering reflective glare is essential for anyone on the water or outdoors. 100% UV Protection: Your Costas absorb 100% of UV light, providing you the best in light management and protection. Scratch Resistant and Durable: The C-Wall coating provides extra scratch-resistance and a barrier that repels water, oil and sweat for easy cleaning. Ocearch: Costa believes in making products with a purpose, that's why we've partnered with OCEARCH to surface a brand new collection of Great White Shark & Tiger Shark inspired sunglasses, shirts, and hats.