Costa Brine 580P C-MATES Readers Polarized Reading Sunglasses have a wraparound style and uncompromising performance that let you see the small stuff on the boat, dock, beach, or extreme sunlight situations. These Costa polarized sunglasses feature C-MATES lenses that magnify your vision without the distraction of bifocal lines. A 3-hole venting system on each temple allows airflow and reduces fogging, while Hydrolite temples keep eyewear firmly in place. 100% polarization blocks glare and UV rays while reducing eyestrain. Costa Brine 580P C-MATES Readers Polarized Reading Sunglasses are scratch- and impact-resistant with a durable nylon frame and integrated hinges. Choose your custom magnification. Includes hard storage case. Imported. C-MATES lenses eliminate visible bifocal lines Plastic lenses are lightweight, scratch- and impact-resistant 100% polarization fights glare and reduces eyestrain Blocks 100% of UV rays Tough, TR 90 nylon frame Integral hinges Venting system allows cooling air flow No-slip Hydrolite temples Comfortable large fit About your Costa lenses: Blue Mirror Encapsulated mirrors deliver superior contrast and color in full sun and eliminate glare (gray base). Gray Maintains color saturation and natural contrast in medium to bright sun conditions. Copper Cuts glare and enhances contrast and color in all conditions.