No winter kit is complete without a merino wool base layer, which rules the game when it comes to warmth and breathability. The Helly Hansen Lifa Merino Midweight Base Layer Hoodie is no exception. This 2-layer hooded long sleeve is light and breathable thanks to a 100% Merino wool exterior and moisture-wicking Lifa interior close to your body. Layer the hood under your helmet for built-in neck protection, and pull up the front when the lift line needs a mask. When the cold weather calls, choose Lifa.