Oakley's Razor Blades were ubiquitous in the early '90s. While not an exact replica, the Hydra silhouette is clearly influenced by that heritage design. They feature a semi-rimless design with a vintage logo on the frames, which are made from plant-based BiO-Matter and offer a secure three-point fit. The lenses are similarly upgraded, with Prizm technology that enhances color and boosts contrast while blocking harmful UV rays.