This versatile technical jacket works both as standalone wind protection and as heat regulating midlayer. The Regulate Jacket features H2Flow technology that puts you in control of your body temperature while offering a high warmth to weight ratio, plus it works with the Helly Hansen CIS system, making it possible to zip together with several of their shell jackets. Perfect for changes in conditions and most activity levels. 100% Polyester Polartec 200g brushed fleece in main body with air pocket perforations Polyester shell outer fabric locks heat inside the air pockets/ Polartec insulation in front Tricot lined sleeves for improved movability YKK Zipped hand pockets CIS Compatible H2Flow mechanical ventilation system for adjustable insulation level Zippers in front allows mechanical ventilation and stimulate air flow Open mesh inside allows air to flow between air pockets and body