CAT Caterpillar Crossrail S3 NM Wide Fit Waterproof Boots | Composite Toe Cap
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100% Metal-Free. 100% Waterproof. Engineered for the Toughest Security & Utility Sites.
The Caterpillar Crossrail is the definitive choice for professionals who demand maximum protection without the weight or conductivity of metal. Built on a specialist Wide Fit last, this boot eliminates the pinching common in standard safety footwear. It is the premier solution for airport workers, security personnel, and utility engineers who require a boot that is airport-scanner friendly and electrically non-conductive.
Certified to the updated EN ISO 20345:2022 standards, the Crossrail is a powerhouse of non-metallic tech. It features a high-impact Composite Toe Cap and a Flexible Composite Midsole, providing 360-degree protection. With a fully integrated Waterproof Membrane and an HRO-rated outsole (300°C), it’s built to handle everything from wet trenches to hot industrial floors.
5 Reasons to Buy the Crossrail NM Wide Fit
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100% Non-Metallic (NM) Construction: Completely metal-free, making it perfect for high-security environments like airports and prisons, while offering superior thermal insulation in cold weather.
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Specialist Wide-Fit Geometry: A broader toe box and higher instep provide the extra volume needed for all-day comfort during 12-hour shifts.
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Elite Waterproofing: Features a dedicated internal membrane to keep feet bone-dry in heavy rain and deep mud—essential for UK outdoor utilities.
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HRO 300°C Heat Resistance: Professional-grade Nitrile Rubber outsole handles extreme contact heat, ideal for welding, foundries, and hot-surface maintenance.
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New SR Slip Resistance: Tested to the latest 2022 mandates for the highest level of grip on oily, wet, and ceramic industrial floors.
Key Features
| Feature | Description |
|---|---|
| Wide-Fit Design | Extra room throughout the boot specifically for workers with broader feet, preventing discomfort and pressure points |
| Non-Metallic Construction (NM) | Completely metal-free design ideal for security checkpoints, metal detectors, and metal-sensitive environments |
| Waterproof Construction (WP) | Fully waterproof membrane keeps feet completely dry in all weather and wet working conditions |
| Composite Toe Cap | Lightweight non-metallic protection tested to 200 Joules impact and 15,000 Newtons compression resistance |
| Heat Resistant Outsole (HRO) | Contact heat resistance up to 300°C for foundries, welding, and high-temperature industrial environments |
| Electrical Hazard Safe (FO) | Fuel and oil resistant outsole provides electrical hazard protection for utility workers |
| S3 Safety Rating | Comprehensive protection including toe cap, penetration resistance, water resistance, and antistatic properties |
| Non-Metallic Penetration Resistant Midsole | Metal-free protective midsole shields feet from sharp objects, nails, and workplace debris |
| Slip Resistant Outsole (SRC) | Superior traction tested on both wet ceramic tile and steel surfaces for safe footing |
| Premium Waterproof Leather | Industrial-grade leather with waterproof membrane ensures durability and complete weather protection |
| Cushioned Insole | Comfortable padded footbed provides support and reduces foot fatigue during extended outdoor shifts |
| Antistatic Protection | Dissipates static electricity to protect sensitive equipment and reduce spark risk in industrial settings |
Technical Specifications
- Safety Standard: EN ISO 20345:2011
- Safety Rating: S3 HRO FO SRC WP NM
- Model: Crossrail
- SKU: 38453
- Toe Protection: Composite Toe Cap, Non-Metallic (200 Joules impact, 15,000 Newtons compression)
- Fit Type: Wide-Fit (Extra room for broader feet)
- Construction: NM Non-Metallic (Completely metal-free)
- Upper Material: Premium Waterproof Leather with sealed membrane
- Waterproofing: WP fully waterproof membrane construction
- Midsole: Non-metallic penetration resistant with shock absorbing technology
- Outsole: HRO heat resistant (300°C), FO electrical hazard resistant, SRC slip resistant rubber compound
- Additional Features: Antistatic, Energy absorbing heel, Waterproof construction, Metal detector friendly
- Closure: Lace-up with durable non-metallic eyelets
- Suitable Industries: Outdoor Construction, Utilities, Electrical Work, Security, Aviation, Heavy Industrial, Foundries, Welding, All-Weather Work
Frequently Asked Questions
What does non-metallic (NM) construction mean and who needs it?
Non-metallic (NM) construction means the Caterpillar Crossrail contains no metal components whatsoever, including a composite toe cap instead of steel, non-metallic penetration resistant midsole, and non-metallic eyelets and hardware. This makes the boot ideal for workers who regularly pass through metal detectors and security checkpoints such as airport personnel, security professionals, and workers in secure facilities. The NM construction is also essential for electrical workers and utility personnel who require non-conductive footwear when working near live electrical systems. Despite being metal-free, the Crossrail maintains full S3 safety certification with the same level of protection as steel toe boots, proving that non-metallic construction does not compromise safety performance.
What does wide-fit mean and who should choose this boot?
Wide-fit safety footwear is specifically designed for workers with broader feet, providing extra room throughout the boot to prevent discomfort, pinching, and pressure points. The Caterpillar Crossrail is ideal for workers who find standard safety boots too narrow, those with bunions, or anyone who prefers additional space in their work footwear for all-day comfort. The wide-fit design provides generous room in the toe box and midfoot area while maintaining a secure heel fit, ensuring comfort during extended outdoor shifts without compromising safety, support, or the comprehensive protection features including waterproofing, heat resistance, electrical hazard safety, and non-metallic construction.
Is the Caterpillar Crossrail fully waterproof?
Yes, the Caterpillar Crossrail features WP (Waterproof) certification with a fully waterproof membrane construction that provides complete protection against water penetration. This advanced waterproofing system keeps feet completely dry even during prolonged exposure to wet conditions, heavy rain, standing water, and damp working environments. Unlike water resistant boots that only protect against light moisture, the WP rating ensures the Crossrail is suitable for outdoor construction work in all weather, utilities maintenance, and any environment where complete waterproof protection is essential throughout extended shifts. The sealed waterproof membrane works in conjunction with the premium leather upper to provide reliable all-weather protection while maintaining the non-metallic construction.
What does S3 HRO FO SRC WP NM rating mean?
This comprehensive safety rating provides multiple layers of protection in a metal-free design. S3 under EN ISO 20345:2011 includes composite toe cap (200 Joules impact resistance), non-metallic penetration resistant midsole, water resistant upper, antistatic properties, and energy absorbing heel. HRO adds heat resistance up to 300°C for high-temperature environments. FO provides fuel and oil resistant outsole with electrical hazard protection. SRC indicates the highest level of slip resistance on both wet ceramic tile (SRA) and steel with glycerol (SRB). WP confirms fully waterproof construction. NM indicates completely non-metallic construction for metal detector compatibility. This makes the Crossrail suitable for demanding outdoor construction, utilities work, security environments, and industrial facilities requiring metal-free footwear.
Does the Caterpillar Crossrail run true to size?
Yes, the Caterpillar Crossrail fits true to size in the wide-fit specification. We recommend ordering your regular UK shoe size. The wide-fit design provides extra room throughout the boot, particularly in the toe box and midfoot areas, while maintaining a secure fit at the heel for stability on outdoor terrain. The composite toe cap provides a more spacious toe box compared to steel toe boots, enhancing comfort without compromising protection. Customer feedback consistently reports the Crossrail is comfortable straight out of the box with minimal break-in period required. The waterproof membrane and non-metallic construction do not affect the internal fit or sizing. If you wear very thick outdoor work socks or have exceptionally broad feet, you may consider ordering a half size up for additional comfort.