Portwest Hi-Vis Extreme Rain Trousers | Waterproof Work Pants UK

Professional-grade hi-vis rain trousers engineered for demanding outdoor work environments. The Portwest Extreme range combines maximum protection with superior comfort, featuring a cutting-edge 3-layer waterproof fabric and reflective safety tape for enhanced visibility. Whether you're working in construction, rail, utilities, or emergency services, these high-visibility rain pants deliver reliable protection against harsh weather conditions.

Maximum Weather Protection These waterproof work trousers are certified to EN 343 Class 4:4 with a water resistance rating of 20,000mm—meaning they'll keep you completely dry even in heavy downpours. The taped seams prevent water penetration at vulnerable joints, ensuring no leaks at stress points.

Breathable Comfort Technology Unlike basic waterproof trousers that trap moisture and sweat, the Portwest Extreme uses advanced moisture vapour transmission (MVP) technology at 10,000g/m²/24hrs. This means sweat escapes while rain stays out, keeping you comfortable during active work throughout the day.

High-Visibility Safety Standards Certified to EN ISO 20471 Class 2 after 50 washes, these hi-vis rain trousers meet strict safety requirements for road and rail workers. The reflective tape ensures workers remain visible in low-light conditions, reducing accident risk on job sites.

3-Layer Waterproof Breathable Fabric The advanced 3L construction combines durability with comfort. 100% polyester stretch twill (75D x 75D) with a bonded PU membrane and polyester tricot backing provides lightweight protection without the bulk of traditional heavy-duty workwear.

PFAS-Free Texpel™ Splash Eco Finish Water simply beads away from the fabric surface thanks to the eco-friendly Texpel treatment—no harmful PFAS chemicals. This sustainable approach maintains water repellency while being kinder to the environment.

Practical Design for Working Conditions

• Side Zip Leg Openings: Quickly slip on or off without removing boots—essential for busy job sites
• Cargo Pockets: Secure storage for tools, keys, or personal items while working
• Drawcord Adjustable Waist: Customizable fit over different clothing layers
• Fully Elasticated Waistband: Ultimate wearer comfort without restricting movement
• Twin-Stitched Seams: Extra durability means these trousers withstand repeated movement and harsh conditions

EN ISO 20471 Class 2 These hi-vis rain trousers meet the European standard for high-visibility safety apparel, ensuring workers are visible to traffic and machinery operators. Certification is maintained after 50 industrial washes, meaning long-term reliability.

EN 343 Class 4:4 Waterproofing Standard This top-tier rating confirms maximum resistance to water penetration and water vapour resistance—the highest protection level available for weather-resistant workwear.

RIS 3279-TOM Rail Industry Compliance The orange variant is certified for railway industry use, meeting strict safety requirements for personnel working on rail networks.

CE Certified Full CE marking confirms these workwear trousers meet all relevant EU health and safety directives.

These professional waterproof work trousers are ideal for workers in:

• Construction & Building: Stay dry on outdoor sites during all seasons
• Rail & Track Work: Meet industry-specific safety requirements
• Utilities & Energy: Protection for outdoor infrastructure maintenance
• Emergency Services: Reliable gear for rescue and response teams
• Landscaping & Grounds Maintenance: All-weather durability for outdoor work
• Waste Management: Heavy-duty protection in challenging conditions

Shell Fabric Construction Portwest Extreme Waterproof and Breathable material composed of 100% polyester stretch twill (75D x 75D) with a polyurethane membrane bonded to 100% polyester tricot backing (30D, 160gsm). This layered approach ensures optimal weight-to-protection ratio.

Technical Performance Data

• Water Resistance (WP): 20,000mm
• Moisture Vapour Transmission (MVP): 10,000g/m²/24hrs
• Breathability Rating: High (allows moisture escape)
• Wind Resistance: Yes
• Durability: Certified after 50 industrial washes

Recommended Care These trousers are designed for heavy industrial use. For maximum lifespan, follow standard workwear washing practices and avoid bleach or fabric softeners that may damage the waterproof membrane.

These hi-vis rain trousers are available in a comprehensive size range to fit different body types. The fully elasticated waistband and drawcord adjustment allow for comfortable wear over thermal layers during winter months or lighter clothing in warmer seasons.

Key Fit Features

• Elasticated waist for flexibility
• Adjustable drawcord for secure fit
• Side zip legs accommodate different footwear
• Regular fit suitable for most body shapes

For specific sizing advice or custom fit requirements, contact our sales team at 01623 645 645 or sales@hall-fast.com.

Fast UK Delivery

• Free delivery on orders over £54.99 (UK mainland)
• Small order charge of £6.95 + VAT on orders under £54.99
• Many items available for next-day delivery
• Express and special delivery services available

Bulk Discounts Available Purchasing in quantity for your workforce? We offer attractive bulk discounts on all our workwear products. Contact our sales team to discuss volume pricing and delivery arrangements.

Remote Area Delivery Some Scottish postcodes and Northern Ireland areas may incur a delivery surcharge. Contact us for details specific to your location.

Q: Are these trousers completely waterproof? A: Yes. Certified to EN 343 Class 4:4 with taped seams and a 20,000mm water resistance rating, they provide complete waterproof protection. The taped seams specifically prevent water penetration at vulnerable joints.

Q: Will I get sweaty wearing these in summer? A: No. The 3-layer breathable construction has a moisture vapour transmission rating of 10,000g/m²/24hrs, meaning sweat escapes while rain stays out. This prevents that clammy feeling common with basic waterproof workwear.

Q: How long do these trousers last? A: These are professional-grade work trousers designed for heavy industrial use. With proper care, they last significantly longer than budget alternatives. The twin-stitched seams and durable 3L fabric resist wear and tear.

Q: Are the reflective strips bright enough to be seen at night? A: Yes. EN ISO 20471 Class 2 certification guarantees high visibility in low-light conditions. The reflective tape meets strict brightness and durability standards for road and rail worker safety.

Q: Can I wash these in a standard machine? A: Yes, but avoid bleach or fabric softeners that can damage the waterproof membrane. Follow standard industrial workwear washing practices for optimal longevity.

Q: What's the difference between Class 2 and other visibility ratings? A: Class 2 means these trousers provide excellent visibility when worn as part of a complete high-visibility outfit. For maximum visibility, pair with a Class 3 hi-vis jacket.

Q: Are they suitable for rail work? A: The orange variant is specifically certified to RIS 3279-TOM Issue 2 for rail industry compliance. Other colours meet general EN ISO 20471 standards but may not satisfy specific rail requirements.