What is the material composition of the yellow brush jacket and pants?

• A. 70% Nomex, 20% Kevlar, 10% Carbon fiber
• B. Nomex IIA aramid fibers (93% Nomex, 5% Kevlar and 2% Carbon fiber)
• C. 100% Nomex
• D. 50% Nomex, 50% Kevlar

Answer: (B)

The material behind the yellow brush jacket and pants is Nomex IIA aramid fabric, specifically a blend of 93% Nomex, 5% Kevlar, and 2% carbon fiber. Nomex provides excellent flame resistance and slows heat transfer, which is essential for brush work. Kevlar contributes added tensile strength and abrasion resistance, helping the fabric hold up to wear. The small amount of carbon fiber reinforces the fabric further, improving dimensional stability and durability without making the garment too stiff or heavy. This combination is chosen to balance heat protection, durability, and mobility for wildland brush PPE. Other mixes would either lack the reinforcement and stability provided by carbon fiber or deviate from the standard Nomex IIA formulation, which is why they’re not used.