Gradient lensese - Dark-to-light tint blocks overhead rays and increases ground visibility; Medium Frames - Just-right midsize sunnies; No Slip - Goodr's lightly-textured silicone earpieces use the goodr Cat Tongue Technology to offer enhanced protection against slippage; No Bounce - Goodr's frame is crafted to be feather-weight, yet snug, with a comfortable fit to prevent bouncing when running; All Polarized - Glare-reducing, polarized lenses and UV400 protection that blocks 100% of those harmful UVA and UVB rays; All Originals - A classic frame shape with timeless appeal that will always be in style (Unlike those heinous trends of the late '00s)