Portwest FR450 PW3 Modaflame Work Hi-Vis Class 1 FR Trousers – Product Description

The Portwest FR450 PW3 Modaflame Work Hi-Vis Class 1 FR Trousers are engineered for workers who need dependable multi-norm protection without sacrificing comfort or mobility. Made from inherent Modaflame fibres, the flame-resistant properties will not wash out, ensuring long-term safety in demanding environments.

These trousers are designed for high movement tasks, combining ergonomic stretch panelling with durable reinforcement at key abrasion zones. Triple-stitched seams deliver exceptional strength, while the high-visibility reflective tape elevates safety in low-light or hazardous conditions.

For practicality on site, the FR450 includes top-loading kneepad pockets, an easy-access cargo pocket, secure back pockets, and a dedicated rule pocket. The extendable leg length allows a tailored fit, and the elasticated waist ensures comfort during long work shifts.

Ideal for workers in utilities, energy, construction, rail, petrochemical, and ATEX-rated environments, these trousers provide certified protection against heat, flame, electric arc and limited chemical splash, while maintaining all-day wearability.

Key Features

• Inherent flame-resistant fabric that retains protection for the life of the garment
• Reinforced panels in high-wear zones for added durability
• Triple-stitched seams for long-term performance
• Extendable leg length (31" to 33")
• Easy-access cargo pocket, rule pocket and secure back pockets
• Top-loading kneepad pockets
• Segmented reflective tape for visibility
• Ergonomic stretch panelling for flexibility
• Side elasticated waist for comfort
• CE certified, CE-CAT III, suitable for ATEX environments
• 40+ UPF rated fabric blocking 98% of UV rays

Fabric Composition

Modaflame Work HV: 60% Modacrylic, 39% Cotton, 1% Carbon Fibre 280g
Modaflame Work Stretch Contrast: 60% Modacrylic, 35% Cotton, 4% Elastane, 1% Carbon Fibre

Certifications

EN ISO 11612 A1+A2, B1, C1, F1
EN ISO 11611 Class 1 A1+A2
EN 1149-5
IEC 61482-2 / IEC 61482-1-1 ELIM 6.4 cal/cm², EBT 6.8 cal/cm²
IEC 61482-1-2 APC 1
EN 13034 Type 6
EN ISO 20471 Class 1