SMITH Squad spruce safari / chromaPop sun black 2020/21 Technology: Cylindrical Carbonic-x Lenses - lens curved only along the X axis (cylinder). Made of pressed carbon. Although this lens is heavier than Spherical Carbonic-x Lenses, it is still scratch-resistant and does not transmit harmful UV radiation. ChromaPop ™ lenses - timeless technology that allows you to see colors and contrasts more accurately, more realistically, more clearly. TLT (tapered lens technology) - in the middle is