Description
The Portwest B314 hi-vis sweater is a half-zip knitted sweater, specially developed for professionals who want to stay visible and warm during outdoor work. The outer material consists of 100% polyester with a brushed back (380 g/m²), which provides insulation without added weight. The sweater is certified according to EN ISO 20471 class 3, the highest class for high-visibility clothing.
For what type of work is the Portwest B314 hi-vis sweater suitable?
The Portwest B314 is suitable for outdoor work where high visibility is required, such as road construction, railway maintenance, logistics, and municipal outdoor work.
Thanks to the RIS 3279 TOM Issue 2 certification (in orange only), the sweater is also approved for use on and around the British railway network, a sector with strict requirements for high-visibility clothing. The combination of warmth and certified visibility makes this model suitable for use as a standalone mid-layer or as an outer layer in milder weather conditions.
What does EN ISO 20471 class 3 mean for this hi-vis sweater?
EN ISO 20471 class 3 is the highest standard class for high-visibility clothing and sets the strictest requirements for the amount of fluorescent material and retroreflective strips on a garment.
In practice, this means that the wearer is highly visible to road users and machine operators, even in poor lighting conditions or at high speeds. Class 3 is mandatory in situations with a high traffic risk, such as on motorways or active construction sites. Classes 1 and 2 offer less coverage and are not permitted in those environments.
The half-zip provides ventilation options, while the contrast material made of PU-coated Oxford fabric reinforces wear-prone areas.
Material and care:
- Outer material: 100% polyester, knitted with a brushed back (380 g/m²)
- Contrast material: 100% 600D Oxford woven polyester, PU coated
Washing instructions: Max wash temp 40°C, mild process. Do not bleach. Do not tumble dry. Dry flat. Do not iron. Do not dry clean.


