This flame retardant work shirt is a great combination of casual and dressed up. Our FR button-down work shirts combine a classic fit, quality construction, and fresh patterns for every day of the work week. Built for the office, job site, or even when you’ve called it a day. This FR work shirt provides a perfect and comfortable fit also soft and fashionable. We did prewash/ preshrunk and wrinkle-free. printed plaid cotton twill FR treated, FR buttons, FR sewing threads. Optional custom embroidery can be added。 FR long sleeve shirts rated with an Arc Thermal Protective Value (ATPV) of 8.2, have a Hazard Risk Category (HRC) 2 classification and are NFPA 70E compliant. They also carry certifications under ASTM 1506. This men’s flame resistant shirt is a perfect addition for managers who need to look professional yet require a degree of fire protection when in the field.