Goodr uses special grip coating to construct their frame to help eliminate slippage when sweating; Goodr's frame is flight-weight to prevent bouncing when running, biking, beasting, or exceeding speeds of Mach 5 (Not tested at hypersonic speed, but...Goodr is pretty sure); These glare-reducing, polarized lenses with UV400 protection blocks 100% of those harmful UVA and UVB rays; Ultimate speed advantage whether you're crushing beers or crushing your competition