TUMI OPTICAL VTU530 Eyeglasses GUNMETAL-CRYSTAL–0DGU 60mm delivers real-world value. Here’s a closer look: TUMI OPTICAL VTU530 Eyeglasses GUNMETAL-CRYSTAL–0DGU 60mm Learn more here: TUMI OPTICAL VTU530 Eyeglasses GUNMETAL-CRYSTAL–0DGU 60mm. To get 10% discount use the coupon code VSC10.