Bolsa is an every-day all-around look-good feel-good subtle wrapped design appealing to women and men. Bolsa is made in Italy out of injection molded TR-90 to ensure light-weight and100% skeletal memory retention for consistent fit and comfort. Like all Kaenon Polarized eyewear Bolsa incorporates our 8 base proprietary SR-91 polarized lenses for a superior visual experience. Bolsa is a contemporary style for those who enjoy smaller frame styling and is Rx-adaptable with Kaenons exclusive SR-91 prescription lenses. The G12 lens is the darkest grey lens. It blocks 88 percent of visible light. It performs best in bright full sun conditions.