As a product expert, we designed our MACH Gs in a classic aviator style to increase your speed whenever you need it. Our smooth and sleek frame eliminates any unwanted imprints on your nose from traditional metal aviator frames with uncomfortable nose pads. To prevent slippage when sweating, our frames are coated with a special grip and have silicone nose inserts. They're also flight-weight to prevent bouncing during intense activities like running, biking, or even reaching Mach 5 speeds (although we haven't tested it at hypersonic speeds). These frames also feature polarized lenses with UV400 protection, blocking 100% of harmful UVA and UVB rays. With an all new shape, our MACH Gs give you the ultimate advantage in speed, whether you're enjoying a cold beer or competing at top speeds.