We've taken the therapeutic and visual performance benefits of our patented Happy Lens(TM) and combined them with the superior clarity of digitally mastered High Definition lenses to create the next evolution in eyewear from SPY. Now you can enjoy enhanced color and contrast, improved mood and alertness, and impact resistant distortion-free optics in one kick-ass package. It's probably the best lens ever. Spy Optic Standard Issue Collection Created exclusively for military, first responders, and law enforcement HD Plus enhances color and contrast, increases clarity, and improves mood and alertness Constructed from virtually indestructible Grilamid(R) Double injection rubber on the inside temple tips keeps the frame secure on your face all-day-long 6-base polycarbonate ARC(R) lenses 5-barrel hinges 100% UV protection reduces eye fatigue and long-term sun damage Frame measures 57-19-145