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Radians ST921 is a flame-resistant Class 3 long sleeve T-shirt. This garment is engineered to protect workers from electric arc flashes and flash fire hazards frequently found in the electric utility, oil, petrochemical, and construction industries. It features 2” segmented FR reflective tape which enhances mobility and breathability and has rib knit cuffs. This CAT 2 workwear meets the ANSI 107:2020 and ASTM F1506 standards providing FR and high visibility protection to stay safe at dangerous job sites.
7.75 oz Jersey Knit FR Modacrylic
2" segmented FR reflective tape
Left chest pocket
Rib knit cuffs
Dual hazard AR/FR
NFPA 70E CAT 2
ASTM F1506
9.6 Cal ATPV
Meets ANSI 107:2020 - Class 3, Type R
How to measure
Chest Width
Measure under the arm and around the fullest part of the chest with arms down, keeping tape horizontal.
Product Measurements
| Size | S | M | L | XL | 2XL | 3XL | 4XL | 5XL | 6XL |
|---|---|---|---|---|---|---|---|---|---|
| Chest | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 31 | 33 |
| Sleeve Length from Center Back | 16 ¾ | 17 ¾ | 18 ¾ | 19 ¾ | 20 ¾ | 21 ¾ | 22 ¾ | 22 ¾ | 22 ¾ |
| Body Length at Back | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 34 ½ | 35 |
- Chest: Measured across the chest one inch below armhole when laid flat.
- Sleeve Length from Center Back: Measure from Center Back neck to shoulder point to sleeve hem.
- Body Length at Back: Measured from high point shoulder to finished hem at back.
Size Chart
| Size | S | M | L | XL | 2XL | 3XL | 4XL | 5XL | 6XL |
|---|---|---|---|---|---|---|---|---|---|
| Chest | 35–37 | 38–40 | 41–43 | 44–46 | 47–49 | 50–53 | 54–57 | 58–60 | 61–63 |
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