The Portwest FR427 PW3 Modaflame Rain+ Hi-Vis FR Winter Holster Trousers are designed to pair with the FR516 or FR606 for full winter FR protection. They feature detachable holster pockets, two-tier bottom loading knee pad pockets and zipped side leg openings, and come in Orange/Black and Yellow/Black.
Frequently Asked Questions
What certifications does the FR427 carry?
The FR427 is certified to EN ISO 11612 (A1+A2, B1, C1, F1) for heat and flame, EN 1149-5 for antistatic protection, EN 61482-1-1 and EN 61482-1-2 APC 2 for arc flash, EN ISO 20471 Class 2 for high visibility, EN 343 Class 4:1 X for weather protection, and EN 342 for cold protection.
Is the FR427 arc-flash rated?
Yes. It's rated ATPV 37 cal/cm² (ELIM 32 cal/cm²) under EN 61482-1-1, and holds APC 2 under EN 61482-1-2, the higher of the two arc protection classes.
Can I wear the FR427 for welding?
Our certification data doesn't show an EN ISO 11611 welding rating for the FR427 trousers, so they should not be relied on as certified welding PPE on their own. Check the jacket or coverall you're pairing them with for welding certification.
Is the FR427 waterproof?
It's rated Class 4:1 X under EN 343, the top water penetration resistance tier under the updated standard, paired with the lowest breathability class, prioritising wet weather protection.
Does the FR427 keep you warm in cold weather?
Yes. It's also certified to EN 342 for protection against cold, with a measured thermal insulation value of 0.341 m²·K/W.
Is the FR427 approved for rail (RIS) work?
The FR427 carries RIS-3279-TOM Issue 2 approval, but only in the Orange/Black colourway. The Yellow/Black option is not RIS-approved.
How should I wash and care for the FR427 to keep its FR protection?
Wash according to the care label and avoid fabric softener and bleach based products, which can degrade flame resistant fibres over time. The FR protection is built into the fabric itself, so it won't wash out, but retire the trousers if visibly damaged or if they fail a wash care check.
