Class 4 Waterproof Protection That Actually Works in Extreme Conditions

When you're working trackside in torrential rain or spending 10-hour shifts outdoors, you need more than basic waterproofs. The Portwest S597 Extreme Trouser delivers EN 343 Class 4:3 R protection – the highest level you can get for waterproof and breathable performance. With an 11,000mm waterproof rating and exceptional 50,000g/m²/24hrs breathability, these overtrousers handle the worst weather without turning into a sauna.

Key Features:

• EN 343 Class 4:3 R Certified: The top waterproof and breathable rating available. Keeps rain out whilst letting moisture escape, so you stay dry inside and out.
  
• Portwest Extreme Fabric Technology: 100% Polyester 300D Stretch Oxford with PU membrane. Stain-resistant finish repels oil, water, and grime – maintains a professional appearance even in filthy conditions.
  
• Railway Industry Approved: Orange colourway meets RIS-3279-TOM Issue 1 standards for trackside work. EN ISO 20471 Class 2 hi-vis with reflective tape and piping for 360-degree visibility.
  
• Ankle Zips for Quick Changes: Side leg zips mean you can pull these on over work boots in seconds. No hopping around trying to get changed in the rain.
  
• Side Access Pockets: Reach your undergarment pockets without removing the overtrousers. Access your phone, wallet, or tools without stripping off.
  
• UPF 50+ Sun Protection: Blocks 98% of harmful UV rays. Protection from rain and sun in one garment – ideal for all-day outdoor work.
  
• Elasticated Waist with Drawcord: Adjustable fit that stays comfortable throughout the shift. No pressure points or constant readjusting.
  
• Sealed Seams Throughout: Water can't sneak through stitching lines. Four pockets for tools and personal items, all protected from the elements.
  

Part of the Portwest PWR Rainwear™ collection, the S597 Extreme Trouser exceeds current industry requirements by a significant margin. Whether you're working railways, construction sites, or utilities, these overtrousers handle extreme conditions without compromise. Available in orange and yellow. Order now.