".... the component of an eye and face protective device extending from the frame to the ear, designed to fit the wearer and hold the device into place"
US Department of Labor, Eye and Face Protection eTool: Glossary, Occupational Safety & Health Administration OSHA, Washington, D.C., USA 2010. https://www.osha.gov/SLTC/etools/eyeandface/glossa ry.html, (OSHA/ Eye and Face Prot - Amer) {622}