Consider Sphere Slash your permission to push past any limits. The result of decades of research with athletes, Sphere Slash was designed with an alternative ""slash"" lens shape to help reduce cheek crash, and optimizes sport performance through a wide field of view and lightweight O Matter frame. The front vent on the frame provides enhanced airflow while Unobtanium notepads and molded-in ear socks deliver a no-slip grip for effortless wear with hats and helmets. To experience enhanced color and contrast everywhere you go, Prizm Lens Technology provides the details.