The Bulwark® flame and arc resistant Men’s Flex Knit Tee with Reflective Striping (STT4) is designed to deliver reliable flame-resistant protection, enhanced visibility, and all-day comfort in hazardous work environments. Engineered with a flexible cotton/spandex blend, this lightweight FR shirt moves with the wearer while maintaining protection against arc flash and flash fire hazards. Featuring 360° heat-sealed reflective striping with an X-back configuration, it ensures high visibility in low-light conditions. The lay-flat rib collar and reinforced neck construction provide lasting comfort, making it ideal for demanding industrial applications.

Key Features

Flame-resistant protection: Designed to protect against arc flash and flash fire hazards
Enhanced visibility: 360° reflective striping with X-back configuration improves worker visibility
ATPV rating 8.3 cal/cm²: Provides Category 2 arc-rated protection
Stretch fabric design: Cotton/spandex blend allows freedom of movement
Lightweight construction: Reduces fatigue during extended wear
Comfort-focused collar: Rib knit collar stretches and retains shape
Durable reflective taping: Heat-sealed for long-lasting performance
Industrial laundry compatible: Suitable for light soil industrial washing

Intended Use

Designed for workers exposed to thermal and visibility hazards, this FR shirt combines protection and comfort for daily use in demanding environments.

Electrical and utility work
Oil & gas operations
Construction and infrastructure projects
Industrial maintenance
Manufacturing environments

Product Specifications

Gender: Men’s
Fabric weight: 6.75 oz
Material: 93% cotton / 7% spandex elastane
Arc rating: 8.3 cal/cm² (ATPV)
Protection category: CAT 2
Hazard protection: Arc flash, flash fire
Reflective tape: Heat-sealed, 360° with X-back configuration
Collar: Rib knit stretch collar
Fit: Flexible knit design for mobility
Care: Industrial laundry (light soil)

Certifications and Standards

NFPA 2112: Standard for flame-resistant garments for protection against flash fire
NFPA 70E: Electrical safety standard for arc flash protection
CSA Z96 Class 2 Level 2: High-visibility safety apparel standard for Canadian workplaces
CAT 2 (Arc Rating): Suitable for moderate arc flash exposure