Portwest T143 Hi-Vis Mesh Panel Trousers | Breathable & Stretch

The Portwest T143 Hi-Vis Mesh Panel Trousers deliver certified high-visibility protection without the discomfort of overheating, making them the ideal choice for workers who need to stay visible and cool during demanding outdoor work. Featuring strategically positioned mesh panels at the back yoke and behind the knees, these trousers promote exceptional airflow exactly where heat builds up most during physical activity.

Crafted from innovative Kingsmill Polyester/Cotton Stretch fabric with 2% elastane, the T143 provides genuine freedom of movement throughout your working day. The 2-way twill stretch construction allows the trousers to move naturally with your body—whether you're climbing, kneeling, bending, or walking across site. Unlike rigid traditional hi-vis trousers, these adapt to your movements rather than restricting them.

The contemporary two-tone design pairs high-visibility fluorescent fabric with contrasting navy panels at high-wear areas. This practical colour-blocking effectively masks dirt, grease, and stains while maximising the visual impact of the fluorescent material. The Texpel™ Stain Eco finish provides additional protection, repelling dirt and water to keep you looking professional throughout demanding shifts.

Five generous pockets provide practical storage for tools, phone, and personal items, including easy-access thigh pockets and top-loading knee pad pockets for all-day comfort when kneeling. The semi-elasticated waistband with elasticated inner grip ensures a secure, comfortable fit that keeps your upper garments tucked in during active work.

Certified to EN ISO 20471 Class 2 (from size S) and RIS 3279 TOM Issue 2 in orange, these trousers meet stringent European and UK rail safety standards. When paired with the matching T164 Hi-Vis Mesh Panel Work Jacket, you have a complete warm-weather visibility system that refuses to compromise between safety and comfort.

The Portwest T143 Hi-Vis Mesh Panel Trousers combine certified Class 2 visibility with outstanding breathability for warm weather work. Strategic mesh panels at the back yoke and knees promote airflow, while 2-way stretch fabric delivers unrestricted movement. The lightweight Kingsmill polycotton construction features Texpel™ Stain Eco finish for durability and dirt resistance. Five pockets including knee pad pockets provide practical storage, while the semi-elasticated waistband ensures all-day comfort. RIS 3279 compliant in orange for rail work. The perfect partner to the T164 Mesh Panel Jacket.

• Strategic mesh panels at back yoke and back knee for superior breathability and airflow
• 2-way twill stretch fabric (65% polyester, 33% cotton, 2% elastane) for freedom of movement
• EN ISO 20471 Class 2 certified for maximum lower-body visibility (from size S)
• RIS 3279 TOM Issue 2 compliant (orange only) for UK rail industry work
• Texpel™ Stain Eco finish repels dirt and water for lasting professional appearance
• Lightweight 190gsm fabric for enhanced comfort in warm conditions
• 5 generous pockets including side, thigh, and back pockets for practical storage
• Top-loading knee pad pockets for easy insertion and all-day kneeling comfort
• Semi-elasticated waistband for secure, comfortable fit across all movements
• Elasticated inner waistband grip keeps upper garments securely tucked in
• Double-stitched seams throughout for enhanced durability and longevity
• Reflective tape bands on legs for 360-degree visibility in low light
• Contrast navy panels at high-wear areas mask dirt and stains effectively
• CE certified and UKCA marked confirming compliance with safety regulations
• Certified to EN ISO 20471 after 25 washes for lasting visibility performance

Q1: What makes the T143 suitable for warm weather work?

A: The T143 features strategically positioned mesh panels at the back yoke and behind the knees—the areas where heat builds up most during physical work. Combined with lightweight 190gsm fabric and breathable polycotton construction, these mesh panels allow body heat and moisture to escape while maintaining full EN ISO 20471 Class 2 certification. This makes them ideal for summer construction, road maintenance, and any outdoor work where overheating is a concern.

Q2: What hi-vis certification do the T143 trousers meet?

A: The T143 meets EN ISO 20471 Class 2 certification from size S upwards (Class 1 for size XS only). This ensures maximum lower-body visibility in both daylight and low-light conditions. The orange colour variant additionally meets RIS 3279 TOM Issue 2, making it approved for UK rail industry work. The trousers are CE certified and UKCA marked, with visibility performance certified after 25 industrial washes.

Q3: Can these trousers be worn for rail work?

A: Yes, the orange/navy colour variant of the T143 is certified to RIS 3279 TOM Issue 2, which is the UK rail industry standard for high-visibility orange materials. This makes them suitable for track-side work, rail maintenance, and other rail industry applications. The yellow/navy variant is not rail-approved, so ensure you select the correct colour for rail environments.

Q4: How does the 2-way stretch fabric benefit workers?

A: The Kingsmill Polyester/Cotton Stretch fabric (65% polyester, 33% cotton, 2% elastane) provides bi-directional stretch that moves naturally with your body. This is particularly beneficial for workers performing physical tasks like climbing ladders, kneeling, bending to pick up materials, or working overhead. The stretch accommodates movement without riding up, binding at the knees, or restricting your range of motion—a common complaint with rigid traditional hi-vis trousers.

Q5: Do the T143 trousers have knee pad pockets?

A: Yes, the T143 features top-loading knee pad pockets that allow quick and easy insertion of knee pads. The top-loading design means you don't need to remove the trousers to adjust or replace pads. The knee pad pockets are compatible with Portwest knee pad inserts, providing cushioned protection during kneeling tasks on hard surfaces.

Q6: What is Texpel™ Stain Eco finish and how does it help?

A: Texpel™ Stain Eco is Portwest's premium stain-resistant fabric treatment that repels dirt, oil, and water. Unlike traditional treatments, Texpel Eco uses environmentally conscious technology while still providing excellent protection against common workplace contaminants. This finish helps the trousers maintain a professional appearance longer, reduces washing frequency, and makes cleaning easier when washing is required.

Q7: How should I care for the T143 to maintain certification?

A: Machine wash at maximum 40°C using a mild detergent and similar colours. Do not bleach, tumble dry, iron, or steam. Drip dry away from direct heat sources. The trousers are certified to maintain EN ISO 20471 performance after 25 industrial washes. Following these care instructions ensures the fluorescent fabric and reflective tape retain their certified visibility properties.

Q8: Do these trousers coordinate with a matching jacket?

A: Yes, the T143 Hi-Vis Mesh Panel Trousers are designed to coordinate with the T164 Hi-Vis Mesh Panel Work Jacket. Both garments feature the same mesh panel technology for breathability, matching 2-way stretch fabric for comfort, and identical colour combinations (Orange/Navy and Yellow/Navy). Together they create a complete warm-weather high-visibility system with consistent styling and performance.

About PW3 Mesh Panel Technology

The Portwest Mesh Panel range represents a breakthrough in warm-weather high-visibility workwear. Traditional hi-vis garments often trap body heat, forcing workers to choose between staying visible or staying cool. By integrating breathable polyester mesh panels at strategic locations—areas where heat naturally accumulates—Portwest has eliminated this compromise.

The mesh panels in the T143 are positioned at the back yoke (lower back area) and behind the knees. These locations are chosen specifically because they experience significant heat buildup during physical work, yet don't require fluorescent material coverage to maintain EN ISO 20471 certification. The result is enhanced airflow exactly where it's needed most, without compromising safety standards.

Kingsmill Polycotton Stretch Technology

The T143 utilises Portwest's advanced Kingsmill Polyester/Cotton Stretch fabric, combining the best properties of multiple fibres:

Polyester (65%): Provides durability, colour retention, quick-drying properties, and maintains the brightness of fluorescent dyes essential for hi-vis performance.

Cotton (33%): Delivers natural breathability, moisture absorption, and soft hand-feel against the skin for all-day comfort.

Elastane (2%): Creates the 2-way stretch that allows unrestricted movement, ensuring the trousers move with the wearer rather than restricting them.

This carefully balanced blend at 190gsm provides the perfect weight—substantial enough for durability in demanding environments, yet light enough for comfort in warm conditions.

Texpel™ Stain Eco Treatment

The T143 features Texpel™ Stain Eco, Portwest's environmentally conscious stain-resistant finish. This advanced treatment creates an invisible barrier that causes liquids to bead and roll off the fabric surface rather than being absorbed. Dirt particles sit on the surface rather than penetrating fibres, making them easier to brush off or wash out.

Unlike older stain-resistant technologies, Texpel Eco achieves these protective properties while minimising environmental impact. The treatment maintains effectiveness through multiple wash cycles, helping trousers retain their professional appearance throughout their working life.

T143 vs Other Portwest Hi-Vis Trousers

When to Choose the T143

Choose the T143 when:

• Working in warm or hot conditions where overheating is a concern
• Performing physically demanding work that generates body heat
• Needing Class 2 visibility without the weight of heavier trousers
• Wanting stretch fabric for improved comfort during active work
• Requiring rail-approved orange hi-vis trousers (RIS 3279)
• Looking for a matching set with the T164 Mesh Panel Jacket

Consider alternatives when:

• Working in cold or wet conditions (choose lined or waterproof options)
• Needing maximum pocket capacity (choose holster pocket styles)
• Requiring heavier duty construction (choose 245gsm options)