Oakley Standard Issue Holbrook™ are a must-have for all military personnel and first responders. These square-shaped sunglasses feature matte black frames that perfectly match the prizm black lens technology. Engineered with o matter material, these shades provide maximum durability and comfort throughout the day. The key bridge adds style to this everyday essential, while enhancing your field of view and letting in plenty of light along with the enhanced vision provided by the prizm black lens technology. Available with lens contrast enhancement technology.