An open-edge design of lightweight O MATTER® frame material, BOTTLECAP offers an unobstructed field of downward view. Patented XYZ OPTICS® maintains razor sharp clarity, even with lens curvature that opens peripheral vision. Offering a comfortable fit on all facial sizes, BOTTLECAP is especially well suited for small to medium-size faces, due to contouring that eliminates the wide corners of conventional frames. This durable optical instrument also provides 100% UV filtering and impact protection that meets all ANSI Z87.1 standards. Its sculpturally integrated hinges are engineered with dual cam action and finished with true metal icons.