FAQ
The 4.5 oz 9717 is the lightest summer FR shirt in this collection. It combines lightweight cotton knit with vented FR mesh under the arms and a loose fit for improved airflow during active work.
The 6 oz B535 has a full bird’s-eye mesh back plus underarm mesh panels, making it a strong choice when heat builds across the upper body. The 6.5 oz 1307 also uses vented panels across the back and underarms but has a more structured button-front design.
The 6008HV uses 5.5 oz cotton knit with vented underarm panels and reflective tape, while the 0624S uses a 6 oz construction. Choose high-visibility FR workwear by its stated protection and your site’s visibility requirements rather than fabric color alone.
Not automatically. The 4.5 oz 9717 is listed as CAT 1 with a 6.0 cal/cm² arc rating, while several 5.5–6 oz styles are listed as CAT 2 with ratings of approximately 8.0 cal/cm² or higher. Always compare the garment label, not weight alone.
The 6 oz B535 includes raglan sleeves, a relaxed fit, and extended front and back hems to support reaching and bending. The loose-fit 9717 also provides extra movement room, making both suitable options for active industrial work.
Several styles are described as pre-washed and pre-shrunk, which helps limit major fit changes. Selected products state that FR performance is maintained for up to 100 washes when the listed temperature and care instructions are followed.