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 our ocean ecosystems balanced. The OCEARCH® Collection helps fund research expeditions that generate critical data and put science on the side of sharks.Explore the Cause