Portwest S278 is a hi-vis long sleeve T-shirt in soft Cotton Comfort fabric – cotton feel next to the skin, polyester outside for lasting colour.
Key features
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Visibility: EN ISO 20471, certified after 50 washes.
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Comfort: 55% cotton / 45% polyester knit, moisture-wicking.
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Sun protection: UPF 40+ fabric blocks 98% of UV.
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Rail: RIS 3279-TOM (orange only).
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Finish: Taped neck seam, reflective tape.
Specifications
| Brand |
Portwest |
| Model |
S278 |
| Type |
Hi-vis T-shirt, long sleeve |
| Material |
55% cotton, 45% polyester, 175 g/m² |
| Standards (as listed by manufacturer) |
EN ISO 20471; RIS 3279-TOM (orange); CE, UKCA |
| Colours |
Hi-vis yellow, hi-vis orange |
| Sizes |
S–3XL |
Best for
Road works, rail, logistics and construction sites where arms must be covered and visible.
Choosing the size
See our size guide. Hi-vis T-shirts are usually worn over a base layer – if you are between sizes, take the larger one.
Complete the kit
Buying for a crew? Ask us for a bulk quote, or see our ready workwear kits. Companies with an EU VAT number can buy without VAT and receive an invoice.