3M™ Versaflo™ Radiant Heat Cover, M-973 Extend M-307 Helmet with flame resistant faceseal use in high temperature environments by providing improved head, neck and shoulders protection and comfort from radiant and ambient heat. Extend M-Series use in high temperature environments by providing improved head, neck and shoulders protection Lightweight aluminised aramid fabric Design also allows flip-up of over visor and main visor with the fabric fitted to the helmet For use with 3M™ Versaflo™ Helmet with flame resistance M-307