Elvex Sphere X-Ultimate,Indoor/Outdoor HC/PC Lens Elvex's has created a exciting line called the Sphere-X UltimateTM. It takes all of the core safety of the Sphere-XTM line into the next generation with Vo ballistic rating for great impact protection and a sleeker, lighter-weight design. The Sphere-X UltimateTM still offers adjustable drop temples for greater comfort and non-slip stability, but Elvex's has added frame ventilation for reduced fogging to our extended wrap-around lenses.