Goggle Material: VinylLens Size: 2" X 4-1/4"Designed To Be Used For Gas Welding OnlyLift Front Design Eliminates Having To Remove Googles Fully For Added Convenience#5 Shade Hardened Lens, When Lens Is Flipped Up There Is Clear Glass UnderneathConforms Comfortably To The Head And Allows Ample Room To Fit Over Regular Eye Glasses