Perfect for general oxyacetylene welding and cutting. This flip front goggle carries?a 2 x 4-1/4" shade 5 filter plate which absorbs infrared and UV. The well-proportioned frame is made of the highest quality soft vinyl. Soft green opaque frame seals out light leaks. Light weight for longer comfort. Hooded vents are featured for air circulation and seals out all light. Fits over RX glasses. Meets ANSI Z87.1. and complies with OSHA regulations.