Portwest IAS3225 Enhanced Visibility FR Insulated BibThe Portwest IAS3225 Enhanced Visibility FR Insulated Bib is built for extreme coldweather worksites where dependable flame resistance, arcflash protection, and serious insulation all need to work together. Its rugged Avenger shell, paired with a wind and vaporbarrier lining and a heavy 14oz FR insulation package, keeps workers warm without restricting movement. The design blends durability, comfort, and visibility, making it a reliable outer layer