Men's Idu Light Jacket is a light and warm mid-layer jacket for men - perfect as an extra warming layer directly or as a reinforcement garment packed in the backpack. The jacket is synthetically lined and is very warm in relation to it´s weight.\n\nThe outer material is DWR-treated to have a repellent effect on water and dirt while it breathes and dissipates moisture in a good way, which means that you can be active but still not get too hot.Under the arms there is stretch material for unlimited freedom of movement and air flow.