The Portwest S431 Iona 3-in-1 Traffic Jacket is built for outdoor work in wet, cold weather where you need to be seen. A waterproof 300D Oxford shell with taped seams keeps rain out, and reflective tape adds visibility.
The removable polar fleece gives you three ways to wear it: the shell on its own in milder rain, the fleece on its own in dry cold, or both zipped together when it is wet and cold. Five pockets, including a phone pocket and an internal zipped pocket, keep your kit close to hand.
Key features
- Taped seams stop water getting in through the stitching
- Water-repellent, eco-conscious fabric finish makes rain bead and run off the surface
- Detachable fleece can be worn as a separate jacket, so one purchase covers different conditions
- Two-way zip with stud-fastened front opening for quick, easy access
- Five pockets in total, including two lower pockets, a phone pocket and an internal zipped pocket for valuables
- Radio loop lets you clip a radio within easy reach
- Drawcord hood and hem help seal out wind and rain; the hood packs away when not needed
- Stud-adjustable cuffs close snugly at the wrist to keep rain out
Materials and performance
Outer shell: 100% polyester 300D Oxford, double PU coated, with a stain-resistant finish, 190g. Lining: 100% polyester, 60g. Removable fleece: 100% polyester with an anti-pill finish, 260g.
Standards and protection
Certified to EN 17353 Type B3 for enhanced visibility and EN 343 Class 3:1 X (WP 15,000mm) for protection against rain.
Fit and sizing
Regular fit. See our Portwest Sizing Guide for detailed information.
Wearing it three ways
Zip the fleece into the shell for wet, cold days. Wear the shell alone when it is raining but mild, or the fleece alone as a warm layer in dry weather.
Care
- Machine wash at 40°C
- Do not bleach
- Do not tumble dry
- Drip dry
- Do not iron
- Do not dry clean
- Certified for up to 25 washes
Add your logo
If you’d like to add your logo to the Portwest S431 Iona 3-in-1 Traffic Jacket, please contact us.






































