The Bulwark® FR Flex Knit Button Down Shirt (STG4) combines the polished look of a traditional office shirt with the comfort of a T-shirt. Made from a flame-resistant 93% cotton and 7% spandex fabric, it offers lightweight stretch and mobility. Key features include two chest pockets with button flaps, a banded collar, and underarm gussets for enhanced movement. Certified to NFPA 2112 and NFPA 70E standards, this shirt provides Category 2 arc flash protection with an 8.3 ATPV rating.