The Portwest FB31 3000 Over-Trousers protect the lower body during work with exposure to radiant, convective and contact heat. A multi-layer build combines a flame resistant outer shell with a moisture barrier and thermal layers.
The cut gives a high degree of freedom of movement, helped by a low-cut crotch seam. Fixed shoulder braces and a half elasticated waist keep the trousers secure while you work.
Key features
- Protection against radiant, convective and contact heat
- Waterproof and breathable, with taped seams that stop water getting through the stitching
- Low-cut crotch seam allows a fuller range of movement when bending, kneeling or climbing
- Non-detachable shoulder braces with adjustable straps and an ergonomic quick release buckle for fast fitting and removal
- Half elasticated waist with side elastic holds the trousers securely in place
- Bellow front fly with concealed hook and loop fastening for quick, easy closure
- Anti-wicking strip at the hem helps stop water being drawn up the leg
- Sewn-on flame resistant industrial wash tape for identification during laundering
Materials and performance
Shell: 60% DuPont™ Nomex® Fibre, 40% Lenzing FR Viscose, 260g. Moisture barrier: FR knitted fabric with PU membrane, 85g. Thermal layer: FR non-woven. Inner thermal layer: FR Aramid Viscose, 260g.
Standards and protection
Certified to EN 469 (Level 2) and classed as CE Category III protective clothing.
Fit and sizing
Regular fit. See our Portwest Sizing Guide for detailed information.
Layered construction
Each layer has its own job. The Nomex® and FR viscose shell forms the flame resistant outer face. Beneath it, the PU membrane moisture barrier keeps water out while letting moisture vapour escape. The non-woven thermal layer and the aramid viscose inner layer add insulation against heat.
Care
- Machine wash at 60°C
- Do not bleach
- Tumble dry at normal temperature
- Line dry in the shade
- Iron at a medium temperature (max 150°C)
- Can be professionally dry cleaned
Add your logo
If you’d like to add your logo to the Portwest FB31 3000 Over-Trousers, please contact us.






























