Goodr uses a special grip coating and silicone nose inserts to construct the frame, helping to eliminate slippage when sweating; Goodr's frame is snug and lightweight, with a comfortable fit to prevent bouncing while crushing any workout; Glare-reducing, polarized lenses with UV400 protection block 100% of harmful UVA and UVB rays; Angular, fashion-forward frames that are always trending...even if you aren't