Theorem Hi Vis Flame Retardant ARC long sleeve sweatshirt provides combined high visibility and arc flash protection for industrial and railway workers. Constructed from a Modacrylic Polyester Cotton Carbon blend, it balances FR performance with everyday comfort.

If you work where flame risk and electrical arc hazards meet low-visibility conditions this sweatshirt helps reduce exposure and keeps you visible. It was designed for crews who need certified protection without sacrificing the fit and stretch expected from a knit sweatshirt.

• Fabric: 41% Modacrylic 30% Polyester 27% Cotton 2% Carbon 275 GSM double jersey knit
• ARC protection: EN 61482-1-1 ATPV 12.8 cal/cm²
• Flame and heat standards: ISO 11612 A1 A2 B1 C1 F2 and EN 1149-5 anti-static
• High visibility: ISO 20471 Class 3 (L+) Class 2 (S M) with FR reflective tape two bands and braces plus sleeve detailing
• Railway compliance: RIS-3279-TOM compliant Hi-Vis Orange plus practical sleeve pocket and contrast trims

Compared to standard cotton sweatshirts this FR Modacrylic blend resists ignition and meets measured arc and heat ratings required for utility and rail work. Unlike loose coveralls this long sleeve sweatshirt fits under jackets and layers easily for on-site flexibility.

Tested to ISO 11612 ISO 20471 EN 1149 and EN 61482 standards and commonly specified for railway utility and industrial safety. Learn more today.