Stay Warm, Dry, and Visible with the S548 Hi-Vis Ultrasonic Heated Tunnel Jacket
When the temperatures drop and conditions get tough, you need gear that works just as hard as you do.
The S548 Hi-Vis Ultrasonic Heated Tunnel Jacket is built to deliver the ultimate combination of warmth, visibility, and protection – perfect for challenging outdoor environments.
Powered Warmth on Demand
Embedded with battery-powered carbon fibre heated panels, this jacket offers next-level comfort. With three adjustable heat settings controlled at the chest, you can tailor your warmth to the conditions. Depending on the setting, you’ll get between 3 to 10 hours of reliable heat, helping you stay focused and comfortable all day long.
Weather-Ready and Hardworking
Thanks to its innovative heat-sealed baffle fabric, the S548 offers premium water and wind resistance, while the PFAS-free Texpel™ Splash Eco finish ensures water beads away, keeping you dry. Plus, with a stain-resistant finish that repels oil, water, and grime, this jacket stands up to the messiest work sites.
Smart Design Features
- Segmented reflective tape enhances visibility while allowing easy movement.
- A detachable hood, adjustable hem, and elasticated cuffs let you customise your fit for maximum comfort and protection.
- Four practical pockets, including internal storage, keep your essentials safe and close.
- Contrast panels help shield against dirt where it matters most.
- UPF 50+ fabric blocks 98% of harmful UV rays, offering extra protection on sunny days.
Certified Safety Standards
The S548 is fully certified to EN ISO 20471 after 25 washes and complies with RIS 3279-TOM for rail industry use (orange only), making it a trusted choice for high-risk environments where visibility is critical.
Premium Build
Made with a durable ripstop polyester shell, a soft polyester taffeta lining, and a high loft polyester fill, this jacket traps heat efficiently without adding unnecessary bulk.
Available in Orange/Black, Yellow/Black,- Also available in Plain BlackS547
Sizes: S – XXXL
Ready to upgrade your cold weather workwear?
The S548 Hi-Vis Ultrasonic Heated Tunnel Jacket keeps you visible, comfortable, and protected – no matter what the day brings.



