What is the brush shirt made of?

• A. 60% aramid, 30% lyocell, 10% nylon
• B. Nomex blend 51% aramid 32% lyocell and 17% polyamide
• C. 70% aramid, 20% lyocell, 10% polyamide
• D. 45% aramid, 40% lyocell, 15% polyamide

Answer: (B)

The brush shirt is designed to balance flame resistance with comfort, using a Nomex aramid blend. This particular composition—51% aramid, 32% lyocell, and 17% polyamide—captures that balance. Aramid fibers provide inherent flame resistance and excellent heat stability, which is essential for protection in brush-fire scenarios. Lyocell adds moisture management and a soft, breathable feel, helping keep the wearer cooler and more comfortable during strenuous work. Polyamide contributes strength and durability, improving abrasion resistance and the garment’s structure.

Choosing a Nomex blend with a majority of aramid ensures solid flame resistance while still allowing enough lyocell for comfort, rather than opting for a fabric with very little comfort fiber or one that’s overly stiff. The presence of Nomex specifically signals a true flame-resistant fabric, which is a key requirement for brush shirts in wildland firefighting.