Costa Del Mar Permit Sunglasses are constructed to conquer glare, eliminate UV light, and provide serious performance. Today, Costa Del Mar remains committed to providing high-performance sunglasses specifically designed for water enthusiasts. C-Mates combine the utility of bifocals with the performance of Costas. Lenses come in both + 1.75 and + 2.50 magnifications. With WAVE 580 lenses, yellow light is nearly eliminated, while the red, blue, and green are significantly increased, resulting in unsurpassed definition, enhanced color, sharper contrast and 100% UV protection. Available in frames and lenses shown below.