Portwest DX4 Hi-Vis Winter Coverall DX438 – Premium Stretch Waterproof Protection with InsulatexPro Insulation

Experience the pinnacle of workwear innovation with the Portwest DX4 Hi-Vis Winter Coverall DX438. Part of Portwest's most dynamic collection yet, this premium one-piece garment combines cutting-edge stretch fabric technology with superior thermal insulation for unparalleled comfort and protection. The DX4 range represents a new era in workwear design, where high-performance stretch fabrics meet robust construction to deliver exceptional freedom of movement and all-day wearability.

Featuring Portwest's innovative InsulatexPro padded lining for lightweight warmth, HiVisTex Pro heat-applied segmented reflective tape for maximum visibility, and Texpel Splash Eco water-resistant finish, this coverall is engineered for professionals who demand the best. The EN ISO 20471 Class 3 certification ensures you remain visible in low-light conditions, while the waterproof construction with taped seams keeps you dry in the harshest weather. Available now at Hall-Fast with fast UK delivery and competitive trade pricing.

Key Features

• DX4 Dynamic Stretch Fabric: Premium 4-way stretch polyester provides exceptional freedom of movement while maintaining durability for demanding work environments
• InsulatexPro Thermal Insulation: Advanced lightweight padding delivers superior warmth without bulk, keeping core body temperature regulated throughout long shifts
• EN ISO 20471 Class 3 Hi-Vis: Maximum visibility certification with HiVisTex Pro heat-applied segmented reflective tape for enhanced recognition in low-light conditions
• Waterproof Protection: Premium waterproof and breathable fabric with fully taped seams prevents water penetration while allowing moisture vapour to escape
• Texpel Splash Eco Finish: PFAS-free eco-conscious water and stain-resistant finish causes liquids to bead up and roll off the fabric surface
• Ergonomic One-Piece Design: Full-body coverage eliminates gaps at waist level, providing complete protection and a streamlined professional appearance
• Multiple Secure Pockets: Strategically positioned storage including chest pockets, thigh pockets, and internal pockets for tools, phone, and personal items
• Detachable Insulated Hood: Pack-away hood with vertical and horizontal adjustment for customisable fit and weather protection
• Top-Loading Kneepad Pockets: Reinforced knee area with accessible kneepad pockets for enhanced comfort and protection during kneeling tasks
• Two-Way Front Zip: Full-length zip with storm flap allows easy donning and doffing, plus convenient access when seated or in vehicles
• Contrast Panels: Strategic navy contrast panels on high-wear areas hide dirt and maintain a professional appearance throughout demanding shifts

Technical Specifications

Benefits for Workers

• Unrivalled Freedom of Movement: The DX4's 4-way dynamic stretch fabric moves with your body, eliminating the restrictive feel of traditional coveralls and reducing fatigue during long shifts
• Lightweight Warmth: InsulatexPro technology provides exceptional thermal insulation without the weight and bulk of conventional padding, maintaining agility in cold conditions
• Complete Weather Protection: EN343 Class 4:1 waterproof rating with 20,000mm water column combined with breathable construction keeps you dry from rain and perspiration
• Maximum Visibility & Safety: EN ISO 20471 Class 3 certification with segmented reflective tape ensures 360° visibility in low-light and night-time working conditions
• Professional Appearance: Contemporary DX4 styling with contrast panels delivers a modern look that transitions seamlessly from work to casual environments
• Eco-Conscious Construction: PFAS-free Texpel Splash Eco finish demonstrates commitment to environmental responsibility without compromising performance

Ideal Applications

The Portwest DX4 Hi-Vis Winter Coverall DX438 is ideal for:

• Construction and civil engineering
• Highways maintenance and road works
• Rail and trackside operations (RIS-3279-TOM certified in orange)
• Utilities and infrastructure maintenance
• Plant and machinery operation
• Warehouse and logistics operations
• Emergency services and recovery
• Grounds maintenance and landscaping
• Cold storage and refrigeration environments
• Outdoor events and security

Frequently Asked Questions

What makes the DX4 range different from other Portwest workwear?

The DX4 collection represents Portwest's most advanced workwear range, combining high-performance 4-way stretch fabrics with contemporary styling. Unlike traditional workwear, DX4 garments use mechanical stretch technology that moves with your body for unrestricted movement. The collection also features premium technologies like InsulatexPro insulation and HiVisTex Pro reflective tape, setting new standards for comfort, protection, and professional appearance.

What is InsulatexPro and how does it work?

InsulatexPro is Portwest's advanced thermal insulation technology. Unlike traditional heavyweight padding, InsulatexPro uses lightweight synthetic fibres that trap air efficiently to create an insulating barrier. This provides exceptional warmth (certified to EN342 for cold protection to -40°C) without the bulk and weight of conventional insulation, allowing for better mobility and all-day comfort.

Is this coverall suitable for rail work?

Yes, the orange version of the DX4 Hi-Vis Winter Coverall is certified to RIS-3279-TOM Issue 2, making it compliant for Network Rail and trackside work in the UK. The garment's EN ISO 20471 Class 3 rating provides the maximum hi-vis coverage required for rail environments, while the waterproof and thermal protection ensures comfort during extended shifts in all weather conditions.

Why choose a coverall over separate jacket and trousers?

Coveralls offer several advantages: complete elimination of gaps at the waist where cold air and rain can enter, consistent protection across the entire body, a streamlined appearance that reduces snagging hazards, and convenience of a single garment. The DX4 coverall's stretch fabric overcomes the traditional limitation of reduced mobility in one-piece garments, offering the protection benefits of a coverall with the comfort of separate clothing.

How should I care for this coverall?

Machine wash at 40°C using a mild detergent. Do not use bleach or fabric softener as these can damage the water-repellent finish and reflective tape. Do not tumble dry—drip dry on a line. Do not iron and do not dry clean. Close all zips before washing. For best performance, the garment is certified for up to 25 washes, after which the water-repellent finish may require re-treatment with a suitable product.

Why Buy from Hall-Fast?

Hall-Fast Industrial Supplies is your trusted partner for quality workwear and safety equipment. As an ISO 9001:2015 certified company, we're committed to delivering exceptional customer service alongside competitive prices on genuine Portwest products.

• Competitive trade pricing on all Portwest DX4 workwear
• Fast and reliable UK delivery
• Expert product advice from our experienced team
• Bulk order discounts available
• Professional embroidery and printing services for corporate branding

Order the Portwest DX4 Hi-Vis Winter Coverall DX438 today from Hall-Fast and experience the ultimate in stretch workwear technology.

Need bulk quantities or custom branding? Contact our sales team on 01623 645645 or email sales@hall-fast.com for competitive trade pricing and corporate embroidery options.