Built for extreme cold you can’t fail to be impressed with the technology hidden within this jacket. For warmth, ground-breaking new Primaloft® ThermoPlume insulation mimics the properties of natural down to a 550 fill power. Working with Reflect technology, an ultra-light internal mesh that reflects your valuable body heat back to you, it boosts your warmth by up to 20%*. This is then body mapped through the design to deliver heat to areas that need it and allow more movement in areas that don’t. Protected by windproof, lightweight Pertex® Quantum fabric on the outer of the jacket, it’s sure to deliver a performance that’s second to none.