Description
Stay Visible, Cool and Protected with the Portwest S478 Hi-Vis Short Sleeve T-Shirt (Yellow)
When summer temperatures rise, the last thing your crew needs is heavy, sweaty high-visibility clothing. The Portwest S478 Hi-Vis T-Shirt Short Sleeve Yellow solves that problem with lightweight, bird-eye micro-mesh polyester that keeps workers cool, dry, and compliant on even the hottest days.
As an Authorized Portwest Distributor, TECHACS Safety Solutions brings you this best-selling hi-vis short sleeve t-shirt at competitive pricing with fast nationwide shipping. Call us today at 212-202-1952 or browse our full Portwest shirts collection here: https://techacs.com/product-category/shirts/
Why Construction, Rail, Roadwork and Warehouse Teams Love the Portwest S478
- Unmatched Breathability & Cooling The 100% polyester bird-eye knit (150g/4.5oz) with micro-mesh construction actively pulls moisture away from the skin and allows maximum airflow. Workers stay cooler and more focused when heat stress is reduced.
- Certified High Visibility Performance
- EN ISO 20471 Class 2
- ANSI/ISEA 107 Type R Class 2 & Type P Class 2
- GO/RT 3279 (Rail Industry – often called RIS-3279-TOM)
- Certified after 50 industrial washes – color and reflective tape stay bright job after job.
- Built-in Sun Protection 40+ UPF rating blocks 98% of harmful UV rays – essential for outdoor crews in summer months.
- Comfort Features Workers Actually Notice
- Generous modern fit (available XS–6XL)
- Crew neck with taped neck seam to prevent irritation
- Texpel™ stain-resistant and quick-dry finish
- Reflective tape positioned for 360° visibility without restricting movement
Who Uses the Portwest S478 Hi-Vis T-Shirt Every Day?
- Railroad maintenance & signaling crews (GO/RT 3279 compliant)

- Highway and road construction teams
- Airport ground staff and baggage handlers
- Warehouse and logistics workers in warm environments
- Utility and telecom field technicians
- Event and traffic control staff
See our comprehensive guide: High Visibility Protection for Every Industry
Technical Specifications – Portwest S478 Hi-Vis Short Sleeve T-Shirt
| Feature | Detail |
|---|---|
| Style | S478 – Hi-Vis Short Sleeve T-Shirt |
| Color | Hi-Vis Yellow (also available in Orange) |
| Fabric | 100% Polyester Bird Eye Knit 150g |
| Sizes | XS – 6XL |
| Standards | EN ISO 20471 Class 2 ANSI/ISEA 107 Type R & P Class 2 GO/RT 3279 |
| UPF Rating | 40+ (blocks 98% UV rays) |
| Wash Durability | Certified after 50× washes |
| Reflective Tape | Heat-applied segmented for flexibility |
Download the official Portwest brochure: https://portwest.com/market/brochure
Why Choose TECHACS as Your Authorized Portwest Distributor?
- Same-day shipping on in-stock S478 yellow and orange
- Bulk pricing and contractor accounts available
- Expert safety consultants – we help you stay OSHA & ANSI compliant
- Follow us on LinkedIn: https://www.linkedin.com/company/techacs/
FAQ – Portwest S478 Hi-Vis Short Sleeve T-Shirt
Q: Is the Portwest S478 hi-vis t-shirt GO/RT 3279 or RIS-3279-TOM certified for UK and European rail work? A: Yes, the S478 is fully certified to GO/RT 3279 (RIS-3279-TOM) standard required by Network Rail and most European rail operators.
Q: What ANSI class is the Portwest S478 short sleeve hi-vis t-shirt? A: It meets ANSI/ISEA 107 Type R Class 2 and Type P Class 2 – perfect for road construction, utility work, and most general industry applications.
Q: Does the Portwest S478 block UV rays? A: Yes – it has a 40+ UPF rating that blocks over 98% of harmful UV rays.
Q: How many washes is the Portwest S478 certified for? A: The reflective tape and fluorescent color are certified to maintain performance after 50 industrial wash cycles.
Q: Is the Portwest S478 breathable and moisture-wicking? A: Absolutely. The bird-eye micro-mesh fabric with Texpel™ finish draws sweat away and dries extremely fast, keeping workers cool in hot weather.
Q: What sizes are available for the Portwest S478 hi-vis t-shirt? A: Available from XS up to 6XL – one of the widest size ranges in hi-vis apparel.
Q: Where can I buy the Portwest S478 in the United States? A: TECHACS Safety Solutions is an official Authorized Portwest Distributor. Call 212-202-1952 or order online with fast shipping.
Order Your Portwest S478 Hi-Vis Short Sleeve T-Shirts Today
Don’t compromise between visibility and comfort. Give your team the Portwest S478 – the lightweight, breathable, fully certified hi-vis t-shirt that actually feels good to wear all day.
Call TECHACS now at 212-202-1952 Visit: www.techacs.com Bulk quotes and contractor pricing available instantly
Stay safe. Stay cool. Stay visible with Portwest and TECHACS Safety Solutions – Your Trusted Authorized Portwest Distributor.
Portwest S478 Hi-Vis T-Shirt Short Sleeve Yellow – Breathable High Visibility Workwear from Your Authorized Portwest Distributor
S478 – Hi-Vis T-Shirt S/S – Yellow
Authorized Portwest Dealer: TECHACS Safety Solutions
Stay cool, visible, and comfortable in the S478 Hi-Vis T-Shirt. Designed for hot weather, this lightweight, breathable t-shirt combines high-visibility safety features with advanced comfort technology. Perfect for demanding work environments, the S478 is crafted to keep you dry, comfortable, and safe on the job.
Key Features
- High Visibility:
- Reflective tape enhances visibility and safety.
- Certified to ANSI/ISEA 107 TYPE R CLASS 2 and EN ISO 20471 Class 2 standards.
- GO/RT 3279 compliant for the rail industry.
- Comfort-Driven Design:
- Breathable fabric wicks moisture away, keeping you cool and dry.
- Texpel™ Wicking finish aids drying and helps remove stains.
- Generous fit with a taped neck seam for extra comfort.
- UV Protection:
- UPF 40+ fabric blocks 98% of harmful UV rays, ideal for outdoor work.
- Durability:
- Maintains certification after 50 washes.
- Wrinkle-resistant Bird Eye Knit fabric ensures long-lasting performance.
Material Details
- Fabric: 100% Polyester, Bird Eye Knit (4.5oz).
Available Options
- Color: Hi-Vis Yellow.
- Sizes: XS to 6XL.
Ideal Applications
- Construction and roadwork.
- Rail industry and transportation.
- Outdoor work in warm climates.
The S478 Hi-Vis T-Shirt offers a perfect blend of safety, comfort, and durability, making it an essential choice for workers in high-visibility environments.
Order your S478 Hi-Vis T-Shirt today from TECHACS Safety Solutions and experience unbeatable comfort and protection!






