Oakley(R) taps into its surfing heritage with Hydra, a Razor Blades-inspired, semi-rimless sunglass with a shield lens. Featuring the Oakley B1B logo on the temples, Hydra is accentuated by a modern trigger stem design, reminiscent of Razor Blades' origins in surf culture. A plant-based BiO-Matter(TM) frame and three-point fit helps provide balanced fit and comfort while Prizm(TM) Lens Technology enhances color and contrast. Fit & Design: Razor Blade inspired, semi-rimless cylindrical lens shape Lightweight, durable BiO-Matter(R) frame with tuned flex for balanced fit, comfort, and head retention - BiO-Matter is made from bio-materials having at least 56% bio-based carbon content (representing ratio of castor oil to fossil sources) 3 point fit with Razor blade inspired stem design