Specs NO SLIP: We use special grip coating and silicone nose inserts to construct our frame to help eliminate slippage when sweating. NO BOUNCE: Our frame is flight-weight to prevent bouncing when running, biking, beasting, or exceeding speeds of Mach 5.* *Not tested at hypersonic speed, but…we’re pretty sure. ALL POLARIZED: The speed of light got nothing on you. These glare-reducing, polarized lenses with UV400 protection blocks 100% of those harmful UVA and UVB rays. ALL SPEED: An all new shape built to give you the ultimate speed advantage whether you're crushing beers or crushing your competition.