See the evidence-based data forest through the systematic trees. The Root Cause Analysis is a high-density acetate frame, which means it’s created from the good, expensive stuff. The time-tested aviator shape originates back to a date that the Internet is just not letting up that easily…but trust us when we say, “timeless.” Matierals: A premium hard coating protects lenses, increasing durability and minimizing scratches. Lenses include a high-performance water, dirt, and grease-repellent coating for easy maintenance and superior optics. Premium, bio-based acetate frame with 3-barrel industrial hinges. Frame Width - 143mm Bridge Width - 17mm Lens Height - (does not include frame) - 48mm Lens Width - (does not include frame) - 56mm" Temple Length - 145mm Hinge-to-Hinge Width - 131mm Vintage style, medium fit An aviator frame shape ideal for oval, square, and heart faces.