Use with V-Gard face shields and all MSA caps or full brim hats (in high-heat situations). NOTE: MSA does not recommend V-Gard metal frames for use where electrical hazards, including but not limited to arc flash, could occur. Use V-Gard frames ONLY with V-Gard face shields to ensure compliance with safety standards. Misuse can result in death, permanent impairment of sight, or other serious injury.