Costa Del Mar’s patented 1mm lenses-with lifetime warranty against depolarization and 100 percent UVAUVB protection-are available in six colors. The polished black or tortoise frames are constructed from a quality nylon composite with Swiss spring hinges. Costa Del Mar’s lightweight quality is worth the extra cost: from $109 for hard-plastic lenses to $209 for glass mirror. % 800-447-3700 to order