Helly Tech® Professional – For extremely challenging wet, cold and windy conditions and the toughest physical challenges, Helly Tech® Professional will keep you dry, warm and confident. The highly advanced Helly Tech® Professional fabrics are engineered to meet the most demanding professional requirements. They push the boundaries of technical fabric engineering and offer waterproof and breathability ratings tailored to the unique performance needs of professionals. All seams are fully taped and welded to our highest specifications for long lasting, professional grade performance.