The SickBird usually means something that is overly incredible, unreal, or extremely exciting. Like a trip to a new country, a day on the boat with friends, or any day that's unforgettable. The TGR SickBird offer polarized perspective through the Zeiss Slow Down Fast lens technology with exceptional coverage to decrease glare and increase style. .Lenses: Slow Down Fast Zeiss Lens Technology Polarized Superior Clarity & Scratch Resistant Lightweight; Impact-Resistant Frame: TGR Tested Medium Fit Gripped Nose Pads Dimensions: Frame Width: 139.7mmBridge Width: 12.7mmLens Width: 60.96 mm