The MACH Gs are a classic aviator style made to give you the speed if you feel the need. Plus, this smooth, sleek frame means no unsightly imprints on your nose from those weird nose pads on traditional metal aviator frames. Fit & Design: Gradient Lenses For Regular or Wider Heads Best Suited for Reaching New Heights Goodr uses special grip coating and silicone nose inserts to construct their frame to help eliminate slippage when sweating Snug and light-weight, with a comfortable fit to prevent bouncing while running, biking, or beasting Glare-reducing, polarized lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays