Costa Fisch Readers Polarized Sunglasses - Matte Black/Blue Mirror - Chris Fischer and his crew are living, breathing, modern-day adventurers and you can bet he's always got a pair of Costas around his neck. Fisch sunglasses feature no-slip Hydrolite lining and our signature three-hole venting system on the front to keep things cool even when things heat up. Power: +2.0 Comfortable extra-large fit. Integral hinge. Heavy-duty TR 90 nylon frame. Includes hard case. 100% UV light blockage for max protection. 100% polarization kills reflected glare and reduces eye strain. Plastic lenses are lightweight, impact- and scratch-resistant. Glass lenses have the greatest clarity and are scratch resistant.