General description The Portwest Hi Vis Ultrasonic Heated Tunnel Jacket S548 is designed to provide exceptional visibility and insulation. This padded jacket features carbon fibre heated panels that deliver extra warmth and comfort, making it ideal for outdoor work in cold conditions. The innovative heat sealed baffle fabric enhances water resistance, ensuring you stay dry and warm. Technical specifications Shell Fabric: 100% Polyester 4 Layer with a Breathable TPU Membrane 195g Lining Fabric: 100% Polyester Tafetta 55g Filling Fabric: 100% Polyester 260g Contrast Fabric: 100% Polyester Pongee Ripstop with TPU Membrane bonded to 100% Polyester Tricot Knit 150g Battery life: 3-10 hours Standards: EN ISO 20471 Class 2 Size S, EN ISO 20471 Class 3 Size M+ Usage Three heat settings controlled by a button at the chest Rechargeable battery included Ideal for outdoor work in cold weather Other information Premium water resistant fabric Heat sealed seams for increased water and wind