No Slip - Special grip-coated frame with silicone inserts to eliminate slippage when sweating; No Bounce - Lightweight, durable frame that prevents bouncing while you crush that WOD; All Polarized - Glare-reducing, polarized lenses with UV400 protection block 100% of harmful UVA and UVB rays; All Angles - Angular, fashion-forward frames that are always trending...even if you aren't; Made for Medium Noggins -Just-right midsize sunnies; Gradient Lenses - Dark-to-light tint blocks overhead rays and increases ground visibility