The Costa King Tide 6 sunglasses invite serious watersport enthusiasts to slap them on for their next adventure. Whether exploring uncharted waters or trying to catch the big one, the King Tide 6 sunglasses offer more than just UV protection. The Costa King Tide 6s sport full coverage with removable side shields and comfort considerations like sweat channels and air vents. Features: Costa King Tide 6 is a Full Rim frame for Men, which is made of Injected Nylon. Nylon is a thermoplastic material that is blended in order to counteract its initial brittleness. Nylon blends are lightweight, stable, and resistant to breakage. Nylon has less of a tendency to "bleed" it&';s plasticizers resulting in great hypoallergenic properties. This model features a Rectangular shape, with a Single Bridge. This model has silicone nose pads for comfort and easy adjustments. Costa King Tide 6 Sunglasses come with a cleaning cloth and protective carrying case. These sunglasses are available with a mirror coating option on certain colors. Mirror coatings are suitable for protection from intense light. A mirror coating reflects back light and reduces the amount of light passing through the lens. This makes it more comfortable for eyes in very sunny conditions