Zeal Optics named this particular shade Tensai, which means genius in Japanese, because this unique design is simply that. These durable yet lightweight frames are made to fit smaller faces, and their nylon metal materials are molded to be very attractive. Zeal added non-slip nose and temple pads to reduce slipping and movement while you're being active. The Tensai's polarized lenses give you glare reduction and sharp vision, even on the streets or water.