The ultimate in performance glasses. A unique mix of technology and handcrafted quality, backed up by a lifetime warranty, makes Costa Del Mar sunglasses the best value available in the sunglass industry today. Costa frames are built with premium materials that hold up under the most extreme conditions. The result is a frame that fits perfectly and is ready for all the wind, sand, water and sun you'll ever encounter. Lens Technology : All Costa lenses are 100 % polarised and provide 100% UV A/B/C protection. Comfortable 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. Built by hand and backed for life. Every pair of Costas includes a lifetime warranty. Plastic lenses are lightweight, impact- and scratch-resistant. Glass lenses have the greatest clarity and are scratch-resistant.