The Portwest S351 Sealtex AIR Trousers give you waterproof and windproof protection in a lightweight fabric that lets moisture escape. They suit outdoor work in wet, windy conditions where you need to stay dry and keep moving.
The 4-way stretch fabric bends and flexes with you. The surface wipes clean easily. A fully elasticated waistband and stud adjustable hems help you get a secure, comfortable fit.
Key features
- Waterproof fabric with welded seams helps stop water getting through at the joins
- Eco-conscious water-repellent finish makes water bead off the surface
- Breathable fabric draws moisture away from the body to help keep you cool and dry
- 4-way stretch fabric moves with you when bending, kneeling or climbing
- Durable, stretchy fabric with a wipe clean finish for quick cleaning after dirty work
- Fully elasticated waistband for easy, comfortable wear
- Stud adjustable hems let you secure the leg ends
Materials and performance
Sealtex Air: 100% polyester tricot, PU coated, 180g.
Standards and protection
Certified to EN 343 Class 4:1 X (WP 5,000mm, MVP 3000g/m2/24hr) for protection against rain and foul weather, and to EN 13034 Type PB [6]. The trousers are also UKCA marked.
Fit and sizing
Regular fit. See our Portwest Sizing Guide for detailed information.
Care
- Machine wash at 40°C on a gentle cycle
- Do not bleach
- Do not tumble dry
- Drip dry
- Do not iron
- Do not dry clean
Add your logo
If you’d like to add your logo to the Portwest S351 Sealtex AIR Trousers, please contact us.



























