Bringing you the highest quality materials, Spencer is designed to elevate your everyday look with elegance and class. Blue Light Blocking: reduces eye fatigue, filtering out blue light from all the screen time our eyes receive each day Premium Polycarbonate: technology that provides a sturdier frame Anti-Scratch Aspheric Lenses: keeps lenses scratch resistant, thinner and light weight Sizing: Lens width: 54mm Bridge: 20mm Temple: 145mm Available in 6 Colors: Bone Tortoise Tortoise SPENCER | R-7067-C2-BLB Tortoise | Blue Light Blocking