AUTO-DARKEN DESIGN:Auto-darkening filter automatically changes from a light state to a dark state when an arc is struck, and it returns to the light state when welding stops. GOOD PROTECTION -- The welding goggles with adjustable shade are designed to protect the eyes from sparks, and harmful radiation under normal welding conditions PROFESSIONAL WELDING GOGGLES:This solar auto darkening welding goggle is made of high quality PC + ABS material, sturdy and durable to use; Designed with imported soft rubber, very comfortable to wear for long time; It also features anti-ultraviolet, infrared radiation, anti-glare, can well protect your eyes during works WIDELY APPLICATIONS -- Solar cells, no battery change required; easy and safety to operate, light weight design; Applicable to gas welding, steel welding, cutting, welding and so on CONVENIENT TO USE -- Goggles frames can be adjustable; Mirror legs can adjust the length, automatic variable light lenses lightweight and convenient, with superior impact resistance, the use of more secure and assured, Manufacturer: TOOLSTAR