Fit & Design Shield sunglasses Special grip coating used to construct frame to help eliminate slippage when sweating Frame is snug and lightweight, with a comfortable fit to prevent bouncing while crushing any workout Adjustable nose piece and a ventilated wrap lens for lightning-in-a-bottle athletes Glare-reducing, polarized lenses with UV400 protection that block 100% of those harmful UVA and UVB rays Additional Details Frame style: Bolt G Medium frames made for medium noggins