Down is a fantastic natural insulator because it's so light and lofty and traps air so effectively. Not so true if it gets wet. So we developed this sailing jacket with water-repellent down, so that when (rather than if) it gets wet, it continues to perform. The outer shell is windproof and water-repellent and the 650 fill power down has a fantastic warmth to weight ratio, you'll be surprised just how warm and light it is. Responsible Down Standard certified. Find out more.